CVE-2024-56587 (GCVE-0-2024-56587)

Vulnerability from cvelistv5 – Published: 2024-12-27 14:50 – Updated: 2026-05-11 20:55
VLAI
Title
leds: class: Protect brightness_show() with led_cdev->led_access mutex
Summary
In the Linux kernel, the following vulnerability has been resolved: leds: class: Protect brightness_show() with led_cdev->led_access mutex There is NULL pointer issue observed if from Process A where hid device being added which results in adding a led_cdev addition and later a another call to access of led_cdev attribute from Process B can result in NULL pointer issue. Use mutex led_cdev->led_access to protect access to led->cdev and its attribute inside brightness_show() and max_brightness_show() and also update the comment for mutex that it should be used to protect the led class device fields. Process A Process B kthread+0x114 worker_thread+0x244 process_scheduled_works+0x248 uhid_device_add_worker+0x24 hid_add_device+0x120 device_add+0x268 bus_probe_device+0x94 device_initial_probe+0x14 __device_attach+0xfc bus_for_each_drv+0x10c __device_attach_driver+0x14c driver_probe_device+0x3c __driver_probe_device+0xa0 really_probe+0x190 hid_device_probe+0x130 ps_probe+0x990 ps_led_register+0x94 devm_led_classdev_register_ext+0x58 led_classdev_register_ext+0x1f8 device_create_with_groups+0x48 device_create_groups_vargs+0xc8 device_add+0x244 kobject_uevent+0x14 kobject_uevent_env[jt]+0x224 mutex_unlock[jt]+0xc4 __mutex_unlock_slowpath+0xd4 wake_up_q+0x70 try_to_wake_up[jt]+0x48c preempt_schedule_common+0x28 __schedule+0x628 __switch_to+0x174 el0t_64_sync+0x1a8/0x1ac el0t_64_sync_handler+0x68/0xbc el0_svc+0x38/0x68 do_el0_svc+0x1c/0x28 el0_svc_common+0x80/0xe0 invoke_syscall+0x58/0x114 __arm64_sys_read+0x1c/0x2c ksys_read+0x78/0xe8 vfs_read+0x1e0/0x2c8 kernfs_fop_read_iter+0x68/0x1b4 seq_read_iter+0x158/0x4ec kernfs_seq_show+0x44/0x54 sysfs_kf_seq_show+0xb4/0x130 dev_attr_show+0x38/0x74 brightness_show+0x20/0x4c dualshock4_led_get_brightness+0xc/0x74 [ 3313.874295][ T4013] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060 [ 3313.874301][ T4013] Mem abort info: [ 3313.874303][ T4013] ESR = 0x0000000096000006 [ 3313.874305][ T4013] EC = 0x25: DABT (current EL), IL = 32 bits [ 3313.874307][ T4013] SET = 0, FnV = 0 [ 3313.874309][ T4013] EA = 0, S1PTW = 0 [ 3313.874311][ T4013] FSC = 0x06: level 2 translation fault [ 3313.874313][ T4013] Data abort info: [ 3313.874314][ T4013] ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000 [ 3313.874316][ T4013] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 3313.874318][ T4013] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 3313.874320][ T4013] user pgtable: 4k pages, 39-bit VAs, pgdp=00000008f2b0a000 .. [ 3313.874332][ T4013] Dumping ftrace buffer: [ 3313.874334][ T4013] (ftrace buffer empty) .. .. [ dd3313.874639][ T4013] CPU: 6 PID: 4013 Comm: InputReader [ 3313.874648][ T4013] pc : dualshock4_led_get_brightness+0xc/0x74 [ 3313.874653][ T4013] lr : led_update_brightness+0x38/0x60 [ 3313.874656][ T4013] sp : ffffffc0b910bbd0 .. .. [ 3313.874685][ T4013] Call trace: [ 3313.874687][ T4013] dualshock4_led_get_brightness+0xc/0x74 [ 3313.874690][ T4013] brightness_show+0x20/0x4c [ 3313.874692][ T4013] dev_attr_show+0x38/0x74 [ 3313.874696][ T4013] sysfs_kf_seq_show+0xb4/0x130 [ 3313.874700][ T4013] kernfs_seq_show+0x44/0x54 [ 3313.874703][ T4013] seq_read_iter+0x158/0x4ec [ 3313.874705][ T4013] kernfs_fop_read_iter+0x68/0x1b4 [ 3313.874708][ T4013] vfs_read+0x1e0/0x2c8 [ 3313.874711][ T4013] ksys_read+0x78/0xe8 [ 3313.874714][ T4013] __arm64_sys_read+0x1c/0x2c [ 3313.874718][ T4013] invoke_syscall+0x58/0x114 [ 3313.874721][ T4013] el0_svc_common+0x80/0xe0 [ 3313.874724][ T4013] do_el0_svc+0x1c/0x28 [ 3313.874727][ T4013] el0_svc+0x38/0x68 [ 3313.874730][ T4013] el0t_64_sync_handler+0x68/0xbc [ 3313.874732][ T4013] el0t_64_sync+0x1a8/0x1ac
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 20:01 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 29d76dfa29fe22583aefddccda0bc56aa81035dc , < 84b42d5b5fcd767c9b7f30b0b32065ed949fe804 (git)
Affected: 29d76dfa29fe22583aefddccda0bc56aa81035dc , < ddcfc5708da9972ac23a9121b3d819b0a53d6f21 (git)
Affected: 29d76dfa29fe22583aefddccda0bc56aa81035dc , < b8283d52ed15c02bb2eb9b1b8644dcc34f8e98f1 (git)
Affected: 29d76dfa29fe22583aefddccda0bc56aa81035dc , < 50d9f68e4adf86901cbab1bd5b91f710aa9141b9 (git)
Affected: 29d76dfa29fe22583aefddccda0bc56aa81035dc , < f6d6fb563e4be245a17bc4261a4b294e8bf8a31e (git)
Affected: 29d76dfa29fe22583aefddccda0bc56aa81035dc , < bb4a6236a430cfc3713f470f3a969f39d6d4ca25 (git)
Affected: 29d76dfa29fe22583aefddccda0bc56aa81035dc , < 4ca7cd938725a4050dcd62ae9472e931d603118d (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.26
Unaffected: 0 , < 2.6.26 (semver)
Unaffected: 5.4.287 , ≤ 5.4.* (semver)
Unaffected: 5.10.231 , ≤ 5.10.* (semver)
Unaffected: 5.15.174 , ≤ 5.15.* (semver)
Unaffected: 6.1.120 , ≤ 6.1.* (semver)
Unaffected: 6.6.66 , ≤ 6.6.* (semver)
Unaffected: 6.12.5 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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              "userInteraction": "NONE",
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          "programFiles": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nleds: class: Protect brightness_show() with led_cdev-\u003eled_access mutex\n\nThere is NULL pointer issue observed if from Process A where hid device\nbeing added which results in adding a led_cdev addition and later a\nanother call to access of led_cdev attribute from Process B can result\nin NULL pointer issue.\n\nUse mutex led_cdev-\u003eled_access to protect access to led-\u003ecdev and its\nattribute inside brightness_show() and max_brightness_show() and also\nupdate the comment for mutex that it should be used to protect the led\nclass device fields.\n\n\tProcess A \t\t\t\tProcess B\n\n kthread+0x114\n worker_thread+0x244\n process_scheduled_works+0x248\n uhid_device_add_worker+0x24\n hid_add_device+0x120\n device_add+0x268\n bus_probe_device+0x94\n device_initial_probe+0x14\n __device_attach+0xfc\n bus_for_each_drv+0x10c\n __device_attach_driver+0x14c\n driver_probe_device+0x3c\n __driver_probe_device+0xa0\n really_probe+0x190\n hid_device_probe+0x130\n ps_probe+0x990\n ps_led_register+0x94\n devm_led_classdev_register_ext+0x58\n led_classdev_register_ext+0x1f8\n device_create_with_groups+0x48\n device_create_groups_vargs+0xc8\n device_add+0x244\n kobject_uevent+0x14\n kobject_uevent_env[jt]+0x224\n mutex_unlock[jt]+0xc4\n __mutex_unlock_slowpath+0xd4\n wake_up_q+0x70\n try_to_wake_up[jt]+0x48c\n preempt_schedule_common+0x28\n __schedule+0x628\n __switch_to+0x174\n\t\t\t\t\t\tel0t_64_sync+0x1a8/0x1ac\n\t\t\t\t\t\tel0t_64_sync_handler+0x68/0xbc\n\t\t\t\t\t\tel0_svc+0x38/0x68\n\t\t\t\t\t\tdo_el0_svc+0x1c/0x28\n\t\t\t\t\t\tel0_svc_common+0x80/0xe0\n\t\t\t\t\t\tinvoke_syscall+0x58/0x114\n\t\t\t\t\t\t__arm64_sys_read+0x1c/0x2c\n\t\t\t\t\t\tksys_read+0x78/0xe8\n\t\t\t\t\t\tvfs_read+0x1e0/0x2c8\n\t\t\t\t\t\tkernfs_fop_read_iter+0x68/0x1b4\n\t\t\t\t\t\tseq_read_iter+0x158/0x4ec\n\t\t\t\t\t\tkernfs_seq_show+0x44/0x54\n\t\t\t\t\t\tsysfs_kf_seq_show+0xb4/0x130\n\t\t\t\t\t\tdev_attr_show+0x38/0x74\n\t\t\t\t\t\tbrightness_show+0x20/0x4c\n\t\t\t\t\t\tdualshock4_led_get_brightness+0xc/0x74\n\n[ 3313.874295][ T4013] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060\n[ 3313.874301][ T4013] Mem abort info:\n[ 3313.874303][ T4013]   ESR = 0x0000000096000006\n[ 3313.874305][ T4013]   EC = 0x25: DABT (current EL), IL = 32 bits\n[ 3313.874307][ T4013]   SET = 0, FnV = 0\n[ 3313.874309][ T4013]   EA = 0, S1PTW = 0\n[ 3313.874311][ T4013]   FSC = 0x06: level 2 translation fault\n[ 3313.874313][ T4013] Data abort info:\n[ 3313.874314][ T4013]   ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000\n[ 3313.874316][ T4013]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[ 3313.874318][ T4013]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[ 3313.874320][ T4013] user pgtable: 4k pages, 39-bit VAs, pgdp=00000008f2b0a000\n..\n\n[ 3313.874332][ T4013] Dumping ftrace buffer:\n[ 3313.874334][ T4013]    (ftrace buffer empty)\n..\n..\n[ dd3313.874639][ T4013] CPU: 6 PID: 4013 Comm: InputReader\n[ 3313.874648][ T4013] pc : dualshock4_led_get_brightness+0xc/0x74\n[ 3313.874653][ T4013] lr : led_update_brightness+0x38/0x60\n[ 3313.874656][ T4013] sp : ffffffc0b910bbd0\n..\n..\n[ 3313.874685][ T4013] Call trace:\n[ 3313.874687][ T4013]  dualshock4_led_get_brightness+0xc/0x74\n[ 3313.874690][ T4013]  brightness_show+0x20/0x4c\n[ 3313.874692][ T4013]  dev_attr_show+0x38/0x74\n[ 3313.874696][ T4013]  sysfs_kf_seq_show+0xb4/0x130\n[ 3313.874700][ T4013]  kernfs_seq_show+0x44/0x54\n[ 3313.874703][ T4013]  seq_read_iter+0x158/0x4ec\n[ 3313.874705][ T4013]  kernfs_fop_read_iter+0x68/0x1b4\n[ 3313.874708][ T4013]  vfs_read+0x1e0/0x2c8\n[ 3313.874711][ T4013]  ksys_read+0x78/0xe8\n[ 3313.874714][ T4013]  __arm64_sys_read+0x1c/0x2c\n[ 3313.874718][ T4013]  invoke_syscall+0x58/0x114\n[ 3313.874721][ T4013]  el0_svc_common+0x80/0xe0\n[ 3313.874724][ T4013]  do_el0_svc+0x1c/0x28\n[ 3313.874727][ T4013]  el0_svc+0x38/0x68\n[ 3313.874730][ T4013]  el0t_64_sync_handler+0x68/0xbc\n[ 3313.874732][ T4013]  el0t_64_sync+0x1a8/0x1ac"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:55:20.639Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/84b42d5b5fcd767c9b7f30b0b32065ed949fe804"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddcfc5708da9972ac23a9121b3d819b0a53d6f21"
        },
        {
          "url": "https://git.kernel.org/stable/c/b8283d52ed15c02bb2eb9b1b8644dcc34f8e98f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/50d9f68e4adf86901cbab1bd5b91f710aa9141b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/f6d6fb563e4be245a17bc4261a4b294e8bf8a31e"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb4a6236a430cfc3713f470f3a969f39d6d4ca25"
        },
        {
          "url": "https://git.kernel.org/stable/c/4ca7cd938725a4050dcd62ae9472e931d603118d"
        }
      ],
      "title": "leds: class: Protect brightness_show() with led_cdev-\u003eled_access mutex",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56587",
    "datePublished": "2024-12-27T14:50:55.402Z",
    "dateReserved": "2024-12-27T14:03:06.002Z",
    "dateUpdated": "2026-05-11T20:55:20.639Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-56587",
      "date": "2026-10-22",
      "epss": "0.00255",
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    "microsoft_vex": {
      "current_release_date": "2025-03-13T00:00:00.000Z",
      "cve": "CVE-2024-56587",
      "id": "msrc_CVE-2024-56587",
      "initial_release_date": "2024-12-02T00:00:00.000Z",
      "product_status:fixed": "4",
      "product_status:known_affected": "4",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "leds: class: Protect brightness_show() with led_cdev-\u003eled_access mutex",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-56587.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/leds/led-class.c",
                  "include/linux/leds.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "84b42d5b5fcd767c9b7f30b0b32065ed949fe804",
                    "status": "affected",
                    "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ddcfc5708da9972ac23a9121b3d819b0a53d6f21",
                    "status": "affected",
                    "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b8283d52ed15c02bb2eb9b1b8644dcc34f8e98f1",
                    "status": "affected",
                    "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "50d9f68e4adf86901cbab1bd5b91f710aa9141b9",
                    "status": "affected",
                    "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f6d6fb563e4be245a17bc4261a4b294e8bf8a31e",
                    "status": "affected",
                    "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "bb4a6236a430cfc3713f470f3a969f39d6d4ca25",
                    "status": "affected",
                    "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4ca7cd938725a4050dcd62ae9472e931d603118d",
                    "status": "affected",
                    "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/leds/led-class.c",
                  "include/linux/leds.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "2.6.26"
                  },
                  {
                    "lessThan": "2.6.26",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.287",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.231",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.174",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.120",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.66",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.5",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.13",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DC7D5C80-B677-4131-A399-3366D7F3961C",
                    "versionEndExcluding": "5.4.287",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B5C644CC-2BD7-4E32-BC54-8DCC7ABE9935",
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                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                    "versionStartIncluding": "5.11",
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                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "09AC6122-E2A4-40FE-9D33-268A1B2EC265",
                    "versionEndExcluding": "6.1.120",
                    "versionStartIncluding": "5.16",
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                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "29A976AD-B9AB-4A95-9F08-7669F8847EB9",
                    "versionEndExcluding": "6.6.66",
                    "versionStartIncluding": "6.2",
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                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9501D045-7A94-42CA-8B03-821BE94A65B7",
                    "versionEndExcluding": "6.12.5",
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                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nleds: class: Protect brightness_show() with led_cdev-\u003eled_access mutex\n\nThere is NULL pointer issue observed if from Process A where hid device\nbeing added which results in adding a led_cdev addition and later a\nanother call to access of led_cdev attribute from Process B can result\nin NULL pointer issue.\n\nUse mutex led_cdev-\u003eled_access to protect access to led-\u003ecdev and its\nattribute inside brightness_show() and max_brightness_show() and also\nupdate the comment for mutex that it should be used to protect the led\nclass device fields.\n\n\tProcess A \t\t\t\tProcess B\n\n kthread+0x114\n worker_thread+0x244\n process_scheduled_works+0x248\n uhid_device_add_worker+0x24\n hid_add_device+0x120\n device_add+0x268\n bus_probe_device+0x94\n device_initial_probe+0x14\n __device_attach+0xfc\n bus_for_each_drv+0x10c\n __device_attach_driver+0x14c\n driver_probe_device+0x3c\n __driver_probe_device+0xa0\n really_probe+0x190\n hid_device_probe+0x130\n ps_probe+0x990\n ps_led_register+0x94\n devm_led_classdev_register_ext+0x58\n led_classdev_register_ext+0x1f8\n device_create_with_groups+0x48\n device_create_groups_vargs+0xc8\n device_add+0x244\n kobject_uevent+0x14\n kobject_uevent_env[jt]+0x224\n mutex_unlock[jt]+0xc4\n __mutex_unlock_slowpath+0xd4\n wake_up_q+0x70\n try_to_wake_up[jt]+0x48c\n preempt_schedule_common+0x28\n __schedule+0x628\n __switch_to+0x174\n\t\t\t\t\t\tel0t_64_sync+0x1a8/0x1ac\n\t\t\t\t\t\tel0t_64_sync_handler+0x68/0xbc\n\t\t\t\t\t\tel0_svc+0x38/0x68\n\t\t\t\t\t\tdo_el0_svc+0x1c/0x28\n\t\t\t\t\t\tel0_svc_common+0x80/0xe0\n\t\t\t\t\t\tinvoke_syscall+0x58/0x114\n\t\t\t\t\t\t__arm64_sys_read+0x1c/0x2c\n\t\t\t\t\t\tksys_read+0x78/0xe8\n\t\t\t\t\t\tvfs_read+0x1e0/0x2c8\n\t\t\t\t\t\tkernfs_fop_read_iter+0x68/0x1b4\n\t\t\t\t\t\tseq_read_iter+0x158/0x4ec\n\t\t\t\t\t\tkernfs_seq_show+0x44/0x54\n\t\t\t\t\t\tsysfs_kf_seq_show+0xb4/0x130\n\t\t\t\t\t\tdev_attr_show+0x38/0x74\n\t\t\t\t\t\tbrightness_show+0x20/0x4c\n\t\t\t\t\t\tdualshock4_led_get_brightness+0xc/0x74\n\n[ 3313.874295][ T4013] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060\n[ 3313.874301][ T4013] Mem abort info:\n[ 3313.874303][ T4013]   ESR = 0x0000000096000006\n[ 3313.874305][ T4013]   EC = 0x25: DABT (current EL), IL = 32 bits\n[ 3313.874307][ T4013]   SET = 0, FnV = 0\n[ 3313.874309][ T4013]   EA = 0, S1PTW = 0\n[ 3313.874311][ T4013]   FSC = 0x06: level 2 translation fault\n[ 3313.874313][ T4013] Data abort info:\n[ 3313.874314][ T4013]   ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000\n[ 3313.874316][ T4013]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[ 3313.874318][ T4013]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[ 3313.874320][ T4013] user pgtable: 4k pages, 39-bit VAs, pgdp=00000008f2b0a000\n..\n\n[ 3313.874332][ T4013] Dumping ftrace buffer:\n[ 3313.874334][ T4013]    (ftrace buffer empty)\n..\n..\n[ dd3313.874639][ T4013] CPU: 6 PID: 4013 Comm: InputReader\n[ 3313.874648][ T4013] pc : dualshock4_led_get_brightness+0xc/0x74\n[ 3313.874653][ T4013] lr : led_update_brightness+0x38/0x60\n[ 3313.874656][ T4013] sp : ffffffc0b910bbd0\n..\n..\n[ 3313.874685][ T4013] Call trace:\n[ 3313.874687][ T4013]  dualshock4_led_get_brightness+0xc/0x74\n[ 3313.874690][ T4013]  brightness_show+0x20/0x4c\n[ 3313.874692][ T4013]  dev_attr_show+0x38/0x74\n[ 3313.874696][ T4013]  sysfs_kf_seq_show+0xb4/0x130\n[ 3313.874700][ T4013]  kernfs_seq_show+0x44/0x54\n[ 3313.874703][ T4013]  seq_read_iter+0x158/0x4ec\n[ 3313.874705][ T4013]  kernfs_fop_read_iter+0x68/0x1b4\n[ 3313.874708][ T4013]  vfs_read+0x1e0/0x2c8\n[ 3313.874711][ T4013]  ksys_read+0x78/0xe8\n[ 3313.874714][ T4013]  __arm64_sys_read+0x1c/0x2c\n[ 3313.874718][ T4013]  invoke_syscall+0x58/0x114\n[ 3313.874721][ T4013]  el0_svc_common+0x80/0xe0\n[ 3313.874724][ T4013]  do_el0_svc+0x1c/0x28\n[ 3313.874727][ T4013]  el0_svc+0x38/0x68\n[ 3313.874730][ T4013]  el0t_64_sync_handler+0x68/0xbc\n[ 3313.874732][ T4013]  el0t_64_sync+0x1a8/0x1ac"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: leds: clase: Proteger illumination_show() con led_cdev-\u0026gt;led_access mutex Se observa un problema de puntero NULL si desde el Proceso A se agrega el dispositivo hid, lo que da como resultado la adici\u00f3n de una adici\u00f3n led_cdev y luego otra llamada para acceder al atributo led_cdev desde el Proceso B puede resultar en un problema de puntero NULL. Use mutex led_cdev-\u0026gt;led_access para proteger el acceso a led-\u0026gt;cdev y su atributo dentro de illumination_show() y max_brightness_show() y tambi\u00e9n actualice el comentario para mutex que debe usarse para proteger los campos del dispositivo de clase led. Proceso A Proceso B kthread+0x114 worker_thread+0x244 process_scheduled_works+0x248 uhid_device_add_worker+0x24 hid_add_device+0x120 device_add+0x268 bus_probe_device+0x94 device_initial_probe+0x14 __device_attach+0xfc bus_for_each_drv+0x10c __device_attach_driver+0x14c driver_probe_device+0x3c __driver_probe_device+0xa0 really_probe+0x190 hid_device_probe+0x130 ps_probe+0x990 ps_led_register+0x94 devm_led_classdev_register_ext+0x58 led_classdev_register_ext+0x1f8 dispositivo_crear_con_grupos+0x48 dispositivo_crear_grupos_vargs+0xc8 dispositivo_agregar+0x244 kobject_uevent+0x14 kobject_uevent_env[jt]+0x224 mutex_unlock[jt]+0xc4 __mutex_unlock_slowpath+0xd4 wake_up_q+0x70 intento_de_activar[jt]+0x48c preempt_schedule_common+0x28 __schedule+0x628 __switch_to+0x174 el0t_64_sync+0x1a8/0x1ac el0t_64_sync_handler+0x68/0xbc el0_svc+0x38/0x68 do_el0_svc+0x1c/0x28 el0_svc_common+0x80/0xe0 invocar_syscall+0x58/0x114 __arm64_sys_read+0x1c/0x2c ksys_read+0x78/0xe8 vfs_read+0x1e0/0x2c8 kernfs_fop_read_iter+0x68/0x1b4 seq_read_iter+0x158/0x4ec kernfs_seq_show+0x44/0x54 sysfs_kf_seq_show+0xb4/0x130 dev_attr_show+0x38/0x74 brillo_show+0x20/0x4c dualshock4_led_get_brillo+0xc/0x74 [ 3313.874295][ T4013] No se puede gestionar la desreferencia del puntero NULL del n\u00facleo en la direcci\u00f3n virtual 0000000000000060 [ 3313.874301][ T4013] Informaci\u00f3n de aborto de memoria: [ 3313.874303][ T4013] ESR = 0x0000000096000006 [ 3313.874305][ T4013] EC = 0x25: DABT (EL actual), IL = 32 bits [ 3313.874307][ T4013] SET = 0, FnV = 0 [ 3313.874309][ T4013] EA = 0, S1PTW = 0 [ 3313.874311][ T4013] FSC = 0x06: error de traducci\u00f3n de nivel 2 [ 3313.874313][ T4013] Informaci\u00f3n de cancelaci\u00f3n de datos: [ 3313.874314][ T4013] ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000 [ 3313.874316][ T4013] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 3313.874318][ T4013] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 3313.874320][ T4013] pgtable de usuario: p\u00e1ginas de 4k, VA de 39 bits, pgdp=00000008f2b0a000 .. [ 3313.874332][ T4013] Volcando b\u00fafer ftrace: [ 3313.874334][ T4013] (b\u00fafer ftrace vac\u00edo) .. .. [ dd3313.874639][ T4013] CPU: 6 PID: 4013 Comm: InputReader [ 3313.874648][ T4013] pc : dualshock4_led_get_brightness+0xc/0x74 [ 3313.874653][ T4013] lr : led_update_brightness+0x38/0x60 [ 3313.874656][ T4013] sp : ffffffc0b910bbd0 .. .. [ 3313.874685][ T4013] Rastreo de llamadas: [ 3313.874687][ T4013] dualshock4_led_get_brightness+0xc/0x74 [ 3313.874690][ T4013] brillo_show+0x20/0x4c [ 3313.874692][ T4013] dev_attr_show+0x38/0x74 [ 3313.874696][ T4013] sysfs_kf_seq_show+0xb4/0x130 [ 3313.874700][ T4013] kernfs_seq_show+0x44/0x54 [ 3313.874703][ T4013] seq_read_iter+0x158/0x4ec [ 3313.874705][ T4013] kernfs_fop_read_iter+0x68/0x1b4 [ 3313.874708][ T4013] vfs_read+0x1e0/0x2c8 [ 3313.874711][ T4013] ksys_read+0x78/0xe8 [ 3313.874714][ T4013] __arm64_sys_read+0x1c/0x2c [ 3313.874718][ T4013] invocar_llamada_al_sistema+0x58/0x114 [ 3313.874721][ T4013] el0_svc_common+0x80/0xe0 [ 3313.874724][ T4013] do_el0_svc+0x1c/0x28 [ 3313.874727][ T4013] el0_svc+0x38/0x68 [ 3313.874730][ T4013] el0t_64_sync_handler+0x68/0xbc [ 3313.874732][ T4013] el0t_64_sync+0x1a8/0x1ac"
          }
        ],
        "id": "CVE-2024-56587",
        "lastModified": "2026-06-17T08:12:28.863",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-56587",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:01:43.486351Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2024-12-27T15:15:17.917",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4ca7cd938725a4050dcd62ae9472e931d603118d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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            ],
            "url": "https://git.kernel.org/stable/c/50d9f68e4adf86901cbab1bd5b91f710aa9141b9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/84b42d5b5fcd767c9b7f30b0b32065ed949fe804"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b8283d52ed15c02bb2eb9b1b8644dcc34f8e98f1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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            ],
            "url": "https://git.kernel.org/stable/c/bb4a6236a430cfc3713f470f3a969f39d6d4ca25"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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            "url": "https://git.kernel.org/stable/c/ddcfc5708da9972ac23a9121b3d819b0a53d6f21"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f6d6fb563e4be245a17bc4261a4b294e8bf8a31e"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T13:54:25+00:00",
      "cve": "CVE-2024-56587",
      "id": "CVE-2024-56587",
      "initial_release_date": "2024-12-27T00:00:00+00:00",
      "product_status:known_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: leds: class: Protect brightness_show() with led_cdev-\u003eled_access mutex",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56587.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T20:50:09.706Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
              },
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 5.5,
                  "baseSeverity": "MEDIUM",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-56587",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T20:01:43.486351Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-476",
                    "description": "CWE-476 NULL Pointer Dereference",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T15:42:25.251Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/leds/led-class.c",
                "include/linux/leds.h"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "84b42d5b5fcd767c9b7f30b0b32065ed949fe804",
                  "status": "affected",
                  "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                  "versionType": "git"
                },
                {
                  "lessThan": "ddcfc5708da9972ac23a9121b3d819b0a53d6f21",
                  "status": "affected",
                  "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                  "versionType": "git"
                },
                {
                  "lessThan": "b8283d52ed15c02bb2eb9b1b8644dcc34f8e98f1",
                  "status": "affected",
                  "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                  "versionType": "git"
                },
                {
                  "lessThan": "50d9f68e4adf86901cbab1bd5b91f710aa9141b9",
                  "status": "affected",
                  "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                  "versionType": "git"
                },
                {
                  "lessThan": "f6d6fb563e4be245a17bc4261a4b294e8bf8a31e",
                  "status": "affected",
                  "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                  "versionType": "git"
                },
                {
                  "lessThan": "bb4a6236a430cfc3713f470f3a969f39d6d4ca25",
                  "status": "affected",
                  "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                  "versionType": "git"
                },
                {
                  "lessThan": "4ca7cd938725a4050dcd62ae9472e931d603118d",
                  "status": "affected",
                  "version": "29d76dfa29fe22583aefddccda0bc56aa81035dc",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/leds/led-class.c",
                "include/linux/leds.h"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.6.26"
                },
                {
                  "lessThan": "2.6.26",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.287",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.231",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.174",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.120",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.66",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.287",
                      "versionStartIncluding": "2.6.26",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.231",
                      "versionStartIncluding": "2.6.26",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.174",
                      "versionStartIncluding": "2.6.26",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.120",
                      "versionStartIncluding": "2.6.26",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.66",
                      "versionStartIncluding": "2.6.26",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.5",
                      "versionStartIncluding": "2.6.26",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13",
                      "versionStartIncluding": "2.6.26",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nleds: class: Protect brightness_show() with led_cdev-\u003eled_access mutex\n\nThere is NULL pointer issue observed if from Process A where hid device\nbeing added which results in adding a led_cdev addition and later a\nanother call to access of led_cdev attribute from Process B can result\nin NULL pointer issue.\n\nUse mutex led_cdev-\u003eled_access to protect access to led-\u003ecdev and its\nattribute inside brightness_show() and max_brightness_show() and also\nupdate the comment for mutex that it should be used to protect the led\nclass device fields.\n\n\tProcess A \t\t\t\tProcess B\n\n kthread+0x114\n worker_thread+0x244\n process_scheduled_works+0x248\n uhid_device_add_worker+0x24\n hid_add_device+0x120\n device_add+0x268\n bus_probe_device+0x94\n device_initial_probe+0x14\n __device_attach+0xfc\n bus_for_each_drv+0x10c\n __device_attach_driver+0x14c\n driver_probe_device+0x3c\n __driver_probe_device+0xa0\n really_probe+0x190\n hid_device_probe+0x130\n ps_probe+0x990\n ps_led_register+0x94\n devm_led_classdev_register_ext+0x58\n led_classdev_register_ext+0x1f8\n device_create_with_groups+0x48\n device_create_groups_vargs+0xc8\n device_add+0x244\n kobject_uevent+0x14\n kobject_uevent_env[jt]+0x224\n mutex_unlock[jt]+0xc4\n __mutex_unlock_slowpath+0xd4\n wake_up_q+0x70\n try_to_wake_up[jt]+0x48c\n preempt_schedule_common+0x28\n __schedule+0x628\n __switch_to+0x174\n\t\t\t\t\t\tel0t_64_sync+0x1a8/0x1ac\n\t\t\t\t\t\tel0t_64_sync_handler+0x68/0xbc\n\t\t\t\t\t\tel0_svc+0x38/0x68\n\t\t\t\t\t\tdo_el0_svc+0x1c/0x28\n\t\t\t\t\t\tel0_svc_common+0x80/0xe0\n\t\t\t\t\t\tinvoke_syscall+0x58/0x114\n\t\t\t\t\t\t__arm64_sys_read+0x1c/0x2c\n\t\t\t\t\t\tksys_read+0x78/0xe8\n\t\t\t\t\t\tvfs_read+0x1e0/0x2c8\n\t\t\t\t\t\tkernfs_fop_read_iter+0x68/0x1b4\n\t\t\t\t\t\tseq_read_iter+0x158/0x4ec\n\t\t\t\t\t\tkernfs_seq_show+0x44/0x54\n\t\t\t\t\t\tsysfs_kf_seq_show+0xb4/0x130\n\t\t\t\t\t\tdev_attr_show+0x38/0x74\n\t\t\t\t\t\tbrightness_show+0x20/0x4c\n\t\t\t\t\t\tdualshock4_led_get_brightness+0xc/0x74\n\n[ 3313.874295][ T4013] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000060\n[ 3313.874301][ T4013] Mem abort info:\n[ 3313.874303][ T4013]   ESR = 0x0000000096000006\n[ 3313.874305][ T4013]   EC = 0x25: DABT (current EL), IL = 32 bits\n[ 3313.874307][ T4013]   SET = 0, FnV = 0\n[ 3313.874309][ T4013]   EA = 0, S1PTW = 0\n[ 3313.874311][ T4013]   FSC = 0x06: level 2 translation fault\n[ 3313.874313][ T4013] Data abort info:\n[ 3313.874314][ T4013]   ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000\n[ 3313.874316][ T4013]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[ 3313.874318][ T4013]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[ 3313.874320][ T4013] user pgtable: 4k pages, 39-bit VAs, pgdp=00000008f2b0a000\n..\n\n[ 3313.874332][ T4013] Dumping ftrace buffer:\n[ 3313.874334][ T4013]    (ftrace buffer empty)\n..\n..\n[ dd3313.874639][ T4013] CPU: 6 PID: 4013 Comm: InputReader\n[ 3313.874648][ T4013] pc : dualshock4_led_get_brightness+0xc/0x74\n[ 3313.874653][ T4013] lr : led_update_brightness+0x38/0x60\n[ 3313.874656][ T4013] sp : ffffffc0b910bbd0\n..\n..\n[ 3313.874685][ T4013] Call trace:\n[ 3313.874687][ T4013]  dualshock4_led_get_brightness+0xc/0x74\n[ 3313.874690][ T4013]  brightness_show+0x20/0x4c\n[ 3313.874692][ T4013]  dev_attr_show+0x38/0x74\n[ 3313.874696][ T4013]  sysfs_kf_seq_show+0xb4/0x130\n[ 3313.874700][ T4013]  kernfs_seq_show+0x44/0x54\n[ 3313.874703][ T4013]  seq_read_iter+0x158/0x4ec\n[ 3313.874705][ T4013]  kernfs_fop_read_iter+0x68/0x1b4\n[ 3313.874708][ T4013]  vfs_read+0x1e0/0x2c8\n[ 3313.874711][ T4013]  ksys_read+0x78/0xe8\n[ 3313.874714][ T4013]  __arm64_sys_read+0x1c/0x2c\n[ 3313.874718][ T4013]  invoke_syscall+0x58/0x114\n[ 3313.874721][ T4013]  el0_svc_common+0x80/0xe0\n[ 3313.874724][ T4013]  do_el0_svc+0x1c/0x28\n[ 3313.874727][ T4013]  el0_svc+0x38/0x68\n[ 3313.874730][ T4013]  el0t_64_sync_handler+0x68/0xbc\n[ 3313.874732][ T4013]  el0t_64_sync+0x1a8/0x1ac"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-01-05T10:55:52.017Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/84b42d5b5fcd767c9b7f30b0b32065ed949fe804"
            },
            {
              "url": "https://git.kernel.org/stable/c/ddcfc5708da9972ac23a9121b3d819b0a53d6f21"
            },
            {
              "url": "https://git.kernel.org/stable/c/b8283d52ed15c02bb2eb9b1b8644dcc34f8e98f1"
            },
            {
              "url": "https://git.kernel.org/stable/c/50d9f68e4adf86901cbab1bd5b91f710aa9141b9"
            },
            {
              "url": "https://git.kernel.org/stable/c/f6d6fb563e4be245a17bc4261a4b294e8bf8a31e"
            },
            {
              "url": "https://git.kernel.org/stable/c/bb4a6236a430cfc3713f470f3a969f39d6d4ca25"
            },
            {
              "url": "https://git.kernel.org/stable/c/4ca7cd938725a4050dcd62ae9472e931d603118d"
            }
          ],
          "title": "leds: class: Protect brightness_show() with led_cdev-\u003eled_access mutex",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-56587",
        "datePublished": "2024-12-27T14:50:55.402Z",
        "dateReserved": "2024-12-27T14:03:06.002Z",
        "dateUpdated": "2026-01-05T10:55:52.017Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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