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FKIE_CVE-2026-89749

Vulnerability from fkie_nvd - Published: 2026-09-11 20:20 - Updated: 2026-09-14 13:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix crash passing ERR_PTR to kthread_stop() event_test_stuff() calls kthread_run() and unconditionally passes the returned task_struct pointer to kthread_stop(). kthread_run() returns an error pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for example under memory pressure during the boot-time event self-test. kthread_stop() then dereferences the invalid pointer, crashing the kernel. Check the result of kthread_run() before passing it to kthread_stop(). Use WARN_ON() so that a failure to create the self-test thread does not go unnoticed, matching the ring-buffer self-test fix in commit 91542863abad ("ring-buffer: Fix crash passing ERR_PTR to kthread_stop()").
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/42ccb215ef0a552acbbd32f81009bfe4b278ba77
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/98d06fb9865a490e12ebe32d65b9ffac6108614d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c1a4fb7aa290f158d50654d640292e49d9055fd1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ceb1707aef5824cf024eb82d10787b7621e2ff35
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/trace_events.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c1a4fb7aa290f158d50654d640292e49d9055fd1",
              "status": "affected",
              "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
              "versionType": "git"
            },
            {
              "lessThan": "42ccb215ef0a552acbbd32f81009bfe4b278ba77",
              "status": "affected",
              "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
              "versionType": "git"
            },
            {
              "lessThan": "98d06fb9865a490e12ebe32d65b9ffac6108614d",
              "status": "affected",
              "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
              "versionType": "git"
            },
            {
              "lessThan": "ceb1707aef5824cf024eb82d10787b7621e2ff35",
              "status": "affected",
              "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
              "versionType": "git"
            },
            {
              "lessThan": "12a499f741fc5be3731c8b0a0d909406575cc2eb",
              "status": "affected",
              "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
              "versionType": "git"
            },
            {
              "lessThan": "adadf4192f700bca82abfda9fa6d58c0bf37cc04",
              "status": "affected",
              "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
              "versionType": "git"
            },
            {
              "lessThan": "c40e0b4fa365969e67011529eabdfb66d1022256",
              "status": "affected",
              "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
              "versionType": "git"
            },
            {
              "lessThan": "649bc7df3e5d7be6f7996a95084037dbf3cad1e5",
              "status": "affected",
              "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/trace_events.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.31"
            },
            {
              "lessThan": "2.6.31",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix crash passing ERR_PTR to kthread_stop()\n\nevent_test_stuff() calls kthread_run() and unconditionally passes the\nreturned task_struct pointer to kthread_stop(). kthread_run() returns an\nerror pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for\nexample under memory pressure during the boot-time event self-test.\nkthread_stop() then dereferences the invalid pointer, crashing the kernel.\n\nCheck the result of kthread_run() before passing it to kthread_stop(). Use\nWARN_ON() so that a failure to create the self-test thread does not go\nunnoticed, matching the ring-buffer self-test fix in commit\n91542863abad (\"ring-buffer: Fix crash passing ERR_PTR to kthread_stop()\")."
    }
  ],
  "id": "CVE-2026-89749",
  "lastModified": "2026-09-14T13:19:23.513",
  "metrics": {},
  "published": "2026-09-11T20:20:05.757",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/42ccb215ef0a552acbbd32f81009bfe4b278ba77"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/98d06fb9865a490e12ebe32d65b9ffac6108614d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c1a4fb7aa290f158d50654d640292e49d9055fd1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ceb1707aef5824cf024eb82d10787b7621e2ff35"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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