CVE-2026-64370 (GCVE-0-2026-64370)
Vulnerability from cvelistv5 – Published: 2026-07-25 08:50 – Updated: 2026-07-25 08:50
VLAI
EPSS
VEX
Title
posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path
Summary
In the Linux kernel, the following vulnerability has been resolved:
posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path
In do_cpu_nanosleep(), posix_cpu_timer_create() takes a pid reference
via get_pid() and stores it in timer.it.cpu.pid. If the subsequent
posix_cpu_timer_set() call fails, the function returns immediately
without calling posix_cpu_timer_del() to release the pid reference,
causing a leak.
Fix it by calling posix_cpu_timer_del() before the unlock-and-return
on the error path, consistent with the other exit paths in the same
function.
Severity
No CVSS data available.
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < afed3cdc1cca133f804fcf57ff228974f424b23a
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8a270b1258797f61b61da44f8bfd41a581b5c85b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d605d00085adc3fddf67de01dc2a44aebf1a3fb5 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e5ffc638faf5dc7d9dc85c9a95e10bf97442e0c0 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < eb4cec29a78334d09bcfb41c0660cdd62ba05843 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7776f9226e99eb49d97492b0b445027cfcb189da (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8f06363446c5d043c9a7c008b250040e9de98cf9 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 87bd2ad568e15b90d5f7d4bcd70342d05dad649c (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix) |
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"version": "5.10.261",
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},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
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"version": "6.1.178",
"versionType": "semver"
},
{
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"version": "6.6.145",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.12.96",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.18.39",
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},
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path\n\nIn do_cpu_nanosleep(), posix_cpu_timer_create() takes a pid reference\nvia get_pid() and stores it in timer.it.cpu.pid. If the subsequent\nposix_cpu_timer_set() call fails, the function returns immediately\nwithout calling posix_cpu_timer_del() to release the pid reference,\ncausing a leak.\n\nFix it by calling posix_cpu_timer_del() before the unlock-and-return\non the error path, consistent with the other exit paths in the same\nfunction."
}
],
"providerMetadata": {
"dateUpdated": "2026-07-25T08:50:23.257Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"url": "https://git.kernel.org/stable/c/afed3cdc1cca133f804fcf57ff228974f424b23a"
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{
"url": "https://git.kernel.org/stable/c/87bd2ad568e15b90d5f7d4bcd70342d05dad649c"
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"title": "posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path",
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"cveId": "CVE-2026-64370",
"datePublished": "2026-07-25T08:50:23.257Z",
"dateReserved": "2026-07-19T15:36:31.783Z",
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"date": "2026-07-26",
"epss": "0.00177",
"percentile": "0.07475"
},
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"cve": "CVE-2026-64370",
"id": "msrc_CVE-2026-64370",
"initial_release_date": "2026-07-26T01:09:59.000Z",
"product_status:under_investigation": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64370.json",
"version": "1"
},
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"suse_vex": {
"aggregate_severity": "not set",
"current_release_date": "2026-07-25T16:00:47Z",
"cve": "CVE-2026-64370",
"id": "CVE-2026-64370",
"initial_release_date": "2026-07-25T16:00:47Z",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-64370",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64370.json",
"version": "2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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