FKIE_CVE-2026-22996

Vulnerability from fkie_nvd - Published: 2026-01-25 15:15 - Updated: 2026-11-05 22:17
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Don't store mlx5e_priv in mlx5e_dev devlink priv mlx5e_priv is an unstable structure that can be memset(0) if profile attaching fails, mlx5e_priv in mlx5e_dev devlink private is used to reference the netdev and mdev associated with that struct. Instead, store netdev directly into mlx5e_dev and get mdev from the containing mlx5_adev aux device structure. This fixes a kernel oops in mlx5e_remove when switchdev mode fails due to change profile failure. $ devlink dev eswitch set pci/0000:00:03.0 mode switchdev Error: mlx5_core: Failed setting eswitch to offloads. dmesg: workqueue: Failed to create a rescuer kthread for wq "mlx5e": -EINTR mlx5_core 0012:03:00.1: mlx5e_netdev_init_profile:6214:(pid 37199): mlx5e_priv_init failed, err=-12 mlx5_core 0012:03:00.1 gpu3rdma1: mlx5e_netdev_change_profile: new profile init failed, -12 workqueue: Failed to create a rescuer kthread for wq "mlx5e": -EINTR mlx5_core 0012:03:00.1: mlx5e_netdev_init_profile:6214:(pid 37199): mlx5e_priv_init failed, err=-12 mlx5_core 0012:03:00.1 gpu3rdma1: mlx5e_netdev_change_profile: failed to rollback to orig profile, -12 $ devlink dev reload pci/0000:00:03.0 ==> oops BUG: kernel NULL pointer dereference, address: 0000000000000520 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP NOPTI CPU: 3 UID: 0 PID: 521 Comm: devlink Not tainted 6.18.0-rc5+ #117 PREEMPT(voluntary) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014 RIP: 0010:mlx5e_remove+0x68/0x130 RSP: 0018:ffffc900034838f0 EFLAGS: 00010246 RAX: ffff88810283c380 RBX: ffff888101874400 RCX: ffffffff826ffc45 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888102d789c0 R08: ffff8881007137f0 R09: ffff888100264e10 R10: ffffc90003483898 R11: ffffc900034838a0 R12: ffff888100d261a0 R13: ffff888100d261a0 R14: ffff8881018749a0 R15: ffff888101874400 FS: 00007f8565fea740(0000) GS:ffff88856a759000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000520 CR3: 000000010b11a004 CR4: 0000000000370ef0 Call Trace: <TASK> device_release_driver_internal+0x19c/0x200 bus_remove_device+0xc6/0x130 device_del+0x160/0x3d0 ? devl_param_driverinit_value_get+0x2d/0x90 mlx5_detach_device+0x89/0xe0 mlx5_unload_one_devl_locked+0x3a/0x70 mlx5_devlink_reload_down+0xc8/0x220 devlink_reload+0x7d/0x260 devlink_nl_reload_doit+0x45b/0x5a0 genl_family_rcv_msg_doit+0xe8/0x140
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/123eda2e5b1638e298e3a66bb1e64a8da92de5e1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b3b902320214835013ce625053b0743a71c804c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3d4f87d41f5140f1cf5c02fce5cdad2637f6244Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dcb2ad755a16cb0ecd2dc98234d71a6e216ae7fePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
linux linux_kernel 6.19
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en.h",
            "drivers/net/ethernet/mellanox/mlx5/core/en_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7b3b902320214835013ce625053b0743a71c804c",
              "status": "affected",
              "version": "c4d7eb57687f358cd498ea3624519236af8db97e",
              "versionType": "git"
            },
            {
              "lessThan": "dcb2ad755a16cb0ecd2dc98234d71a6e216ae7fe",
              "status": "affected",
              "version": "c4d7eb57687f358cd498ea3624519236af8db97e",
              "versionType": "git"
            },
            {
              "lessThan": "a3d4f87d41f5140f1cf5c02fce5cdad2637f6244",
              "status": "affected",
              "version": "c4d7eb57687f358cd498ea3624519236af8db97e",
              "versionType": "git"
            },
            {
              "lessThan": "123eda2e5b1638e298e3a66bb1e64a8da92de5e1",
              "status": "affected",
              "version": "c4d7eb57687f358cd498ea3624519236af8db97e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/en.h",
            "drivers/net/ethernet/mellanox/mlx5/core/en_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "03FFE083-08F0-4592-8B7A-0E43F95168A7",
              "versionEndExcluding": "6.12.67",
              "versionStartIncluding": "5.12",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "99FF3E05-0E7A-44E9-8E47-BF6F1F8EC436",
              "versionEndExcluding": "6.18.7",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB",
              "vulnerable": true
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC",
              "vulnerable": true
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Don\u0027t store mlx5e_priv in mlx5e_dev devlink priv\n\nmlx5e_priv is an unstable structure that can be memset(0) if profile\nattaching fails, mlx5e_priv in mlx5e_dev devlink private is used to\nreference the netdev and mdev associated with that struct. Instead,\nstore netdev directly into mlx5e_dev and get mdev from the containing\nmlx5_adev aux device structure.\n\nThis fixes a kernel oops in mlx5e_remove when switchdev mode fails due\nto change profile failure.\n\n$ devlink dev eswitch set pci/0000:00:03.0 mode switchdev\nError: mlx5_core: Failed setting eswitch to offloads.\ndmesg:\nworkqueue: Failed to create a rescuer kthread for wq \"mlx5e\": -EINTR\nmlx5_core 0012:03:00.1: mlx5e_netdev_init_profile:6214:(pid 37199): mlx5e_priv_init failed, err=-12\nmlx5_core 0012:03:00.1 gpu3rdma1: mlx5e_netdev_change_profile: new profile init failed, -12\nworkqueue: Failed to create a rescuer kthread for wq \"mlx5e\": -EINTR\nmlx5_core 0012:03:00.1: mlx5e_netdev_init_profile:6214:(pid 37199): mlx5e_priv_init failed, err=-12\nmlx5_core 0012:03:00.1 gpu3rdma1: mlx5e_netdev_change_profile: failed to rollback to orig profile, -12\n\n$ devlink dev reload pci/0000:00:03.0 ==\u003e oops\n\nBUG: kernel NULL pointer dereference, address: 0000000000000520\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\nPGD 0 P4D 0\nOops: Oops: 0000 [#1] SMP NOPTI\nCPU: 3 UID: 0 PID: 521 Comm: devlink Not tainted 6.18.0-rc5+ #117 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014\nRIP: 0010:mlx5e_remove+0x68/0x130\nRSP: 0018:ffffc900034838f0 EFLAGS: 00010246\nRAX: ffff88810283c380 RBX: ffff888101874400 RCX: ffffffff826ffc45\nRDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000\nRBP: ffff888102d789c0 R08: ffff8881007137f0 R09: ffff888100264e10\nR10: ffffc90003483898 R11: ffffc900034838a0 R12: ffff888100d261a0\nR13: ffff888100d261a0 R14: ffff8881018749a0 R15: ffff888101874400\nFS:  00007f8565fea740(0000) GS:ffff88856a759000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000520 CR3: 000000010b11a004 CR4: 0000000000370ef0\nCall Trace:\n \u003cTASK\u003e\n device_release_driver_internal+0x19c/0x200\n bus_remove_device+0xc6/0x130\n device_del+0x160/0x3d0\n ? devl_param_driverinit_value_get+0x2d/0x90\n mlx5_detach_device+0x89/0xe0\n mlx5_unload_one_devl_locked+0x3a/0x70\n mlx5_devlink_reload_down+0xc8/0x220\n devlink_reload+0x7d/0x260\n devlink_nl_reload_doit+0x45b/0x5a0\n genl_family_rcv_msg_doit+0xe8/0x140"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/mlx5e: No almacenar mlx5e_priv en mlx5e_dev devlink priv\n\nmlx5e_priv es una estructura inestable que puede ser memset(0) si falla la conexi\u00f3n del perfil. mlx5e_priv en mlx5e_dev devlink private se utiliza para referenciar el netdev y mdev asociados con esa estructura. En su lugar, almacenar netdev directamente en mlx5e_dev y obtener mdev de la estructura del dispositivo auxiliar mlx5_adev que lo contiene.\n\nEsto corrige un kernel oops en mlx5e_remove cuando el modo switchdev falla debido a un fallo en el cambio de perfil.\n\n$ devlink dev eswitch set pci/0000:00:03.0 mode switchdev\nError: mlx5_core: Fall\u00f3 al establecer eswitch en offloads.\ndmesg:\nworkqueue: Fall\u00f3 al crear un kthread de rescate para wq \"mlx5e\": -EINTR\nmlx5_core 0012:03:00.1: mlx5e_netdev_init_profile:6214:(pid 37199): mlx5e_priv_init failed, err=-12\nmlx5_core 0012:03:00.1 gpu3rdma1: mlx5e_netdev_change_profile: new profile init failed, -12\nworkqueue: Fall\u00f3 al crear un kthread de rescate para wq \"mlx5e\": -EINTR\nmlx5_core 0012:03:00.1: mlx5e_netdev_init_profile:6214:(pid 37199): mlx5e_priv_init failed, err=-12\nmlx5_core 0012:03:00.1 gpu3rdma1: mlx5e_netdev_change_profile: failed to rollback to orig profile, -12\n\n$ devlink dev reload pci/0000:00:03.0 ==\u0026gt; oops\n\nBUG: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000520\n #PF: acceso de lectura de supervisor en modo kernel\n #PF: error_code(0x0000) - p\u00e1gina no presente\nPGD 0 P4D 0\nOops: Oops: 0000 [#1] SMP NOPTI\nCPU: 3 UID: 0 PID: 521 Comm: devlink Not tainted 6.18.0-rc5+ #117 PREEMPT(voluntary)\nNombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-2.fc40 04/01/2014\nRIP: 0010:mlx5e_remove+0x68/0x130\nRSP: 0018:ffffc900034838f0 EFLAGS: 00010246\nRAX: ffff88810283c380 RBX: ffff888101874400 RCX: ffffffff826ffc45\nRDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000\nRBP: ffff888102d789c0 R08: ffff8881007137f0 R09: ffff888100264e10\nR10: ffffc90003483898 R11: ffffc900034838a0 R12: ffff888100d261a0\nR13: ffff888100d261a0 R14: ffff8881018749a0 R15: ffff888101874400\nFS:  00007f8565fea740(0000) GS:ffff88856a759000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000520 CR3: 000000010b11a004 CR4: 0000000000370ef0\nRastro de Llamada:\n \n device_release_driver_internal+0x19c/0x200\n bus_remove_device+0xc6/0x130\n device_del+0x160/0x3d0\n ? devl_param_driverinit_value_get+0x2d/0x90\n mlx5_detach_device+0x89/0xe0\n mlx5_unload_one_devl_locked+0x3a/0x70\n mlx5_devlink_reload_down+0xc8/0x220\n devlink_reload+0x7d/0x260\n devlink_nl_reload_doit+0x45b/0x5a0\n genl_family_rcv_msg_doit+0xe8/0x140"
    }
  ],
  "id": "CVE-2026-22996",
  "lastModified": "2026-11-05T22:17:58.667",
  "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-22996",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-11-05T21:18:11.659006Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-25T15:15:54.430",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/123eda2e5b1638e298e3a66bb1e64a8da92de5e1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7b3b902320214835013ce625053b0743a71c804c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a3d4f87d41f5140f1cf5c02fce5cdad2637f6244"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/dcb2ad755a16cb0ecd2dc98234d71a6e216ae7fe"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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