Skip to content
Heist/ feed
High

perf: Fix sample vs do_exit()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: perf: Fix sample vs do_exit() Baisheng Gao reported an ARM64 crash, which Mark decoded as being a synchronous external abort -- most likely due to trying to access MMIO in bad ways. The crash further shows perf trying to do a user stack sample while in exit_mmap()'s tlb_finish_mmu() -- i.e. while tearing down the address space it is trying to access. It turns out that we stop perf after we tear down the userspace mm; a receipie for disaster, since perf likes to access userspace for various reasons. Flip this order by moving up where we stop perf in do_exit(). Additionally, harden PERF_SAMPLE_CALLCHAIN and PERF_SAMPLE_STACK_USER to abort when the current task does not have an mm (exit_mm() makes sure to set current->mm = NULL; before commencing with the actual teardown). Such that CPU wide events don't trip on this same problem.

Announced Source revision 1
Original source ↗

CVE-2025-38424

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-2025-38424

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": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
        "lessThan": "7b8f3c72175c6a63a95cf2e219f8b78e2baad34e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
        "lessThan": "507c9a595bad3abd107c6a8857d7fd125d89f386",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
        "lessThan": "a9f6aab7910a0ef2895797f15c947f6d1053160f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
        "lessThan": "975ffddfa2e19823c719459d2364fcaa17673964",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
        "lessThan": "2ee6044a693735396bb47eeaba1ac3ae26c1c99b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
        "lessThan": "456019adaa2f5366b89c868dea9b483179bece54",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
        "lessThan": "7311970d07c4606362081250da95f2c7901fc0db",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "c5ebcedb566ef17bda7b02686e0d658a7bb42ee7",
        "lessThan": "4f6fc782128355931527cefe3eb45338abd8ab39",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "kernel/events/core.c",
      "kernel/exit.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.7",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.4.295",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.239",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.186",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.142",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.95",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.35",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.15.4",
        "versionType": "semver",
        "lessThanOrEqual": "6.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.16",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "kernel/events/core.c",
      "kernel/exit.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-38424

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30566 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement