perf: Fix sample vs do_exit()
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.
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