Skip to content
Heist/ feed
Unrated

tracing: Fix crash passing ERR_PTR to kthread_stop()

Type: advisorySource: Official CVE List1 source record

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()").

Announced Group revision 1
Original source ↗

CVE-2026-89749

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-89749

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
        "lessThan": "c1a4fb7aa290f158d50654d640292e49d9055fd1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
        "lessThan": "42ccb215ef0a552acbbd32f81009bfe4b278ba77",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
        "lessThan": "98d06fb9865a490e12ebe32d65b9ffac6108614d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
        "lessThan": "ceb1707aef5824cf024eb82d10787b7621e2ff35",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
        "lessThan": "12a499f741fc5be3731c8b0a0d909406575cc2eb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
        "lessThan": "adadf4192f700bca82abfda9fa6d58c0bf37cc04",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
        "lessThan": "c40e0b4fa365969e67011529eabdfb66d1022256",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19",
        "lessThan": "649bc7df3e5d7be6f7996a95084037dbf3cad1e5",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "kernel/trace/trace_events.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.31"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.31",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "kernel/trace/trace_events.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89749

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#35223 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-89749 · Revision 1Source updated