CVE-2025-38424perf: Fix sample vs do_exit()
- 7.8HighCVSS base score
- 0.22%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 3 months later
· 3 months later
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.22% · top 88% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 – < 7b8f3c72175c6a63a95cf2e219f8b78e2baad34e
- affected c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 – < 507c9a595bad3abd107c6a8857d7fd125d89f386
- affected c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 – < a9f6aab7910a0ef2895797f15c947f6d1053160f
- affected c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 – < 975ffddfa2e19823c719459d2364fcaa17673964
- affected c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 – < 2ee6044a693735396bb47eeaba1ac3ae26c1c99b
- affected c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 – < 456019adaa2f5366b89c868dea9b483179bece54
- affected c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 – < 7311970d07c4606362081250da95f2c7901fc0db
- affected c5ebcedb566ef17bda7b02686e0d658a7bb42ee7 – < 4f6fc782128355931527cefe3eb45338abd8ab39
- affected 3.7
- unaffected < 3.7
- unaffected 5.4.295 – ≤ 5.4.*
- unaffected 5.10.239 – ≤ 5.10.*
- unaffected 5.15.186 – ≤ 5.15.*
- unaffected 6.1.142 – ≤ 6.1.*
- unaffected 6.6.95 – ≤ 6.6.*
- unaffected 6.12.35 – ≤ 6.12.*
- unaffected 6.15.4 – ≤ 6.15.*
- unaffected 6.16 – ≤ *
References
References10
- https://git.kernel.org/stable/c/7b8f3c72175c6a63a95cf2e219f8b78e2baad34e (opens in a new tab)
- https://git.kernel.org/stable/c/507c9a595bad3abd107c6a8857d7fd125d89f386 (opens in a new tab)
- https://git.kernel.org/stable/c/a9f6aab7910a0ef2895797f15c947f6d1053160f (opens in a new tab)
- https://git.kernel.org/stable/c/975ffddfa2e19823c719459d2364fcaa17673964 (opens in a new tab)
- https://git.kernel.org/stable/c/2ee6044a693735396bb47eeaba1ac3ae26c1c99b (opens in a new tab)
- https://git.kernel.org/stable/c/456019adaa2f5366b89c868dea9b483179bece54 (opens in a new tab)
- https://git.kernel.org/stable/c/7311970d07c4606362081250da95f2c7901fc0db (opens in a new tab)
- https://git.kernel.org/stable/c/4f6fc782128355931527cefe3eb45338abd8ab39 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-22661 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-38424)Record last updated .