CVE-2026-64162 (GCVE-0-2026-64162)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40
VLAI
Title
idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()
Summary
In the Linux kernel, the following vulnerability has been resolved: idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init() In idpf_ptp_init(), read_dev_clk_lock is initialized after ptp_schedule_worker() had already been called (and after idpf_ptp_settime64() could reach the lock). The PTP aux worker fires immediately upon scheduling and can call into idpf_ptp_read_src_clk_reg_direct(), which takes spin_lock(&ptp->read_dev_clk_lock) on an uninitialized lock, triggering the lockdep "non-static key" warning: [12973.796587] idpf 0000:83:00.0: Device HW Reset initiated [12974.094507] INFO: trying to register non-static key. ... [12974.097208] Call Trace: [12974.097213] <TASK> [12974.097218] dump_stack_lvl+0x93/0xe0 [12974.097234] register_lock_class+0x4c4/0x4e0 [12974.097249] ? __lock_acquire+0x427/0x2290 [12974.097259] __lock_acquire+0x98/0x2290 [12974.097272] lock_acquire+0xc6/0x310 [12974.097281] ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf] [12974.097311] ? lockdep_hardirqs_on_prepare+0xde/0x190 [12974.097318] ? finish_task_switch.isra.0+0xd2/0x350 [12974.097330] ? __pfx_ptp_aux_kworker+0x10/0x10 [ptp] [12974.097343] _raw_spin_lock+0x30/0x40 [12974.097353] ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf] [12974.097373] idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf] [12974.097391] ? kthread_worker_fn+0x88/0x3d0 [12974.097404] ? kthread_worker_fn+0x4e/0x3d0 [12974.097411] idpf_ptp_update_cached_phctime+0x26/0x120 [idpf] [12974.097428] ? _raw_spin_unlock_irq+0x28/0x50 [12974.097436] idpf_ptp_do_aux_work+0x15/0x20 [idpf] [12974.097454] ptp_aux_kworker+0x20/0x40 [ptp] [12974.097464] kthread_worker_fn+0xd5/0x3d0 [12974.097474] ? __pfx_kthread_worker_fn+0x10/0x10 [12974.097482] kthread+0xf4/0x130 [12974.097489] ? __pfx_kthread+0x10/0x10 [12974.097498] ret_from_fork+0x32c/0x410 [12974.097512] ? __pfx_kthread+0x10/0x10 [12974.097519] ret_from_fork_asm+0x1a/0x30 [12974.097540] </TASK> Move the call to spin_lock_init() up a bit to make sure read_dev_clk_lock is not touched before it's been initialized.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5cb8805d2366b20ee4d7afff586d8acf17649330 , < eb5991d4c8ba2e8153dfcda3e66a9608377b7dce (git)
Affected: 5cb8805d2366b20ee4d7afff586d8acf17649330 , < 3122d70b7c0101d897fb795658a7b93f854935f2 (git)
Affected: 5cb8805d2366b20ee4d7afff586d8acf17649330 , < da4f76b6a84ede14a71282ef841768299ead0221 (git)
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Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/idpf/idpf_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "eb5991d4c8ba2e8153dfcda3e66a9608377b7dce",
              "status": "affected",
              "version": "5cb8805d2366b20ee4d7afff586d8acf17649330",
              "versionType": "git"
            },
            {
              "lessThan": "3122d70b7c0101d897fb795658a7b93f854935f2",
              "status": "affected",
              "version": "5cb8805d2366b20ee4d7afff586d8acf17649330",
              "versionType": "git"
            },
            {
              "lessThan": "da4f76b6a84ede14a71282ef841768299ead0221",
              "status": "affected",
              "version": "5cb8805d2366b20ee4d7afff586d8acf17649330",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/idpf/idpf_ptp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.34",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()\n\nIn idpf_ptp_init(), read_dev_clk_lock is initialized after\nptp_schedule_worker() had already been called (and after\nidpf_ptp_settime64() could reach the lock). The PTP aux worker\nfires immediately upon scheduling and can call into\nidpf_ptp_read_src_clk_reg_direct(), which takes\nspin_lock(\u0026ptp-\u003eread_dev_clk_lock) on an uninitialized lock, triggering\nthe lockdep \"non-static key\" warning:\n\n[12973.796587] idpf 0000:83:00.0: Device HW Reset initiated\n[12974.094507] INFO: trying to register non-static key.\n...\n[12974.097208] Call Trace:\n[12974.097213]  \u003cTASK\u003e\n[12974.097218]  dump_stack_lvl+0x93/0xe0\n[12974.097234]  register_lock_class+0x4c4/0x4e0\n[12974.097249]  ? __lock_acquire+0x427/0x2290\n[12974.097259]  __lock_acquire+0x98/0x2290\n[12974.097272]  lock_acquire+0xc6/0x310\n[12974.097281]  ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097311]  ? lockdep_hardirqs_on_prepare+0xde/0x190\n[12974.097318]  ? finish_task_switch.isra.0+0xd2/0x350\n[12974.097330]  ? __pfx_ptp_aux_kworker+0x10/0x10 [ptp]\n[12974.097343]  _raw_spin_lock+0x30/0x40\n[12974.097353]  ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097373]  idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\n[12974.097391]  ? kthread_worker_fn+0x88/0x3d0\n[12974.097404]  ? kthread_worker_fn+0x4e/0x3d0\n[12974.097411]  idpf_ptp_update_cached_phctime+0x26/0x120 [idpf]\n[12974.097428]  ? _raw_spin_unlock_irq+0x28/0x50\n[12974.097436]  idpf_ptp_do_aux_work+0x15/0x20 [idpf]\n[12974.097454]  ptp_aux_kworker+0x20/0x40 [ptp]\n[12974.097464]  kthread_worker_fn+0xd5/0x3d0\n[12974.097474]  ? __pfx_kthread_worker_fn+0x10/0x10\n[12974.097482]  kthread+0xf4/0x130\n[12974.097489]  ? __pfx_kthread+0x10/0x10\n[12974.097498]  ret_from_fork+0x32c/0x410\n[12974.097512]  ? __pfx_kthread+0x10/0x10\n[12974.097519]  ret_from_fork_asm+0x1a/0x30\n[12974.097540]  \u003c/TASK\u003e\n\nMove the call to spin_lock_init() up a bit to make sure read_dev_clk_lock\nis not touched before it\u0027s been initialized."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:40:48.461Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/eb5991d4c8ba2e8153dfcda3e66a9608377b7dce"
        },
        {
          "url": "https://git.kernel.org/stable/c/3122d70b7c0101d897fb795658a7b93f854935f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/da4f76b6a84ede14a71282ef841768299ead0221"
        }
      ],
      "title": "idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64162",
    "datePublished": "2026-07-19T15:40:48.461Z",
    "dateReserved": "2026-07-19T07:54:57.038Z",
    "dateUpdated": "2026-07-19T15:40:48.461Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64162",
      "date": "2026-07-20",
      "epss": "0.00155",
      "percentile": "0.05065"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64162\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-19T16:17:58.213\",\"lastModified\":\"2026-07-19T16:17:58.213\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nidpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()\\n\\nIn idpf_ptp_init(), read_dev_clk_lock is initialized after\\nptp_schedule_worker() had already been called (and after\\nidpf_ptp_settime64() could reach the lock). The PTP aux worker\\nfires immediately upon scheduling and can call into\\nidpf_ptp_read_src_clk_reg_direct(), which takes\\nspin_lock(\u0026ptp-\u003eread_dev_clk_lock) on an uninitialized lock, triggering\\nthe lockdep \\\"non-static key\\\" warning:\\n\\n[12973.796587] idpf 0000:83:00.0: Device HW Reset initiated\\n[12974.094507] INFO: trying to register non-static key.\\n...\\n[12974.097208] Call Trace:\\n[12974.097213]  \u003cTASK\u003e\\n[12974.097218]  dump_stack_lvl+0x93/0xe0\\n[12974.097234]  register_lock_class+0x4c4/0x4e0\\n[12974.097249]  ? __lock_acquire+0x427/0x2290\\n[12974.097259]  __lock_acquire+0x98/0x2290\\n[12974.097272]  lock_acquire+0xc6/0x310\\n[12974.097281]  ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\\n[12974.097311]  ? lockdep_hardirqs_on_prepare+0xde/0x190\\n[12974.097318]  ? finish_task_switch.isra.0+0xd2/0x350\\n[12974.097330]  ? __pfx_ptp_aux_kworker+0x10/0x10 [ptp]\\n[12974.097343]  _raw_spin_lock+0x30/0x40\\n[12974.097353]  ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\\n[12974.097373]  idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf]\\n[12974.097391]  ? kthread_worker_fn+0x88/0x3d0\\n[12974.097404]  ? kthread_worker_fn+0x4e/0x3d0\\n[12974.097411]  idpf_ptp_update_cached_phctime+0x26/0x120 [idpf]\\n[12974.097428]  ? _raw_spin_unlock_irq+0x28/0x50\\n[12974.097436]  idpf_ptp_do_aux_work+0x15/0x20 [idpf]\\n[12974.097454]  ptp_aux_kworker+0x20/0x40 [ptp]\\n[12974.097464]  kthread_worker_fn+0xd5/0x3d0\\n[12974.097474]  ? __pfx_kthread_worker_fn+0x10/0x10\\n[12974.097482]  kthread+0xf4/0x130\\n[12974.097489]  ? __pfx_kthread+0x10/0x10\\n[12974.097498]  ret_from_fork+0x32c/0x410\\n[12974.097512]  ? __pfx_kthread+0x10/0x10\\n[12974.097519]  ret_from_fork_asm+0x1a/0x30\\n[12974.097540]  \u003c/TASK\u003e\\n\\nMove the call to spin_lock_init() up a bit to make sure read_dev_clk_lock\\nis not touched before it\u0027s been initialized.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/intel/idpf/idpf_ptp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5cb8805d2366b20ee4d7afff586d8acf17649330\",\"lessThan\":\"eb5991d4c8ba2e8153dfcda3e66a9608377b7dce\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5cb8805d2366b20ee4d7afff586d8acf17649330\",\"lessThan\":\"3122d70b7c0101d897fb795658a7b93f854935f2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5cb8805d2366b20ee4d7afff586d8acf17649330\",\"lessThan\":\"da4f76b6a84ede14a71282ef841768299ead0221\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/intel/idpf/idpf_ptp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.34\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.11\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3122d70b7c0101d897fb795658a7b93f854935f2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/da4f76b6a84ede14a71282ef841768299ead0221\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb5991d4c8ba2e8153dfcda3e66a9608377b7dce\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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