CVE-2026-64371 (GCVE-0-2026-64371)
Vulnerability from cvelistv5
Published
2026-07-25 08:50
Modified
2026-08-17 04:54
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
proc: protect ptrace_may_access() with exec_update_lock (part 1)
Fix the easy cases where procfs currently calls ptrace_may_access() without
exec_update_lock protection, where the fix is to simply add the extra lock
or use mm_access():
- do_task_stat(): grab exec_update_lock
- proc_pid_wchan(): grab exec_update_lock
- proc_map_files_lookup(): use mm_access() instead of get_task_mm()
- proc_map_files_readdir(): use mm_access() instead of get_task_mm()
- proc_ns_get_link(): grab exec_update_lock
- proc_ns_readlink(): grab exec_update_lock
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: f83ce3e6b02d5e48b3a43b001390e2b58820389d Version: f83ce3e6b02d5e48b3a43b001390e2b58820389d Version: f83ce3e6b02d5e48b3a43b001390e2b58820389d Version: f83ce3e6b02d5e48b3a43b001390e2b58820389d Version: f83ce3e6b02d5e48b3a43b001390e2b58820389d Version: f83ce3e6b02d5e48b3a43b001390e2b58820389d Version: f83ce3e6b02d5e48b3a43b001390e2b58820389d Version: f83ce3e6b02d5e48b3a43b001390e2b58820389d Version: 6b06d6282100dd5aacf7d45443d651a1995bd9c4 Version: 334ed22054b2ec8477e4409e214fc139cf937ef6 Version: 2.6.27.23 ≤ Version: 2.6.29.3 ≤ |
||
{
"containers": {
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"fs/proc/array.c",
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},
{
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"programFiles": [
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"fs/proc/base.c",
"fs/proc/namespaces.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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},
{
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"status": "unaffected",
"version": "0",
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},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
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},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
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},
{
"lessThanOrEqual": "6.1.*",
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"version": "6.1.178",
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},
{
"lessThanOrEqual": "6.6.*",
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"version": "6.6.145",
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},
{
"lessThanOrEqual": "6.12.*",
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"version": "6.12.97",
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},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.40",
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},
{
"lessThanOrEqual": "7.1.*",
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"version": "7.1.4",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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],
"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nproc: protect ptrace_may_access() with exec_update_lock (part 1)\n\nFix the easy cases where procfs currently calls ptrace_may_access() without\nexec_update_lock protection, where the fix is to simply add the extra lock\nor use mm_access():\n\n - do_task_stat(): grab exec_update_lock\n - proc_pid_wchan(): grab exec_update_lock\n - proc_map_files_lookup(): use mm_access() instead of get_task_mm()\n - proc_map_files_readdir(): use mm_access() instead of get_task_mm()\n - proc_ns_get_link(): grab exec_update_lock\n - proc_ns_readlink(): grab exec_update_lock"
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:54:21.091Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d"
},
{
"url": "https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7"
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{
"url": "https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9"
},
{
"url": "https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0"
},
{
"url": "https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4"
},
{
"url": "https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3"
},
{
"url": "https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e"
},
{
"url": "https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69"
}
],
"title": "proc: protect ptrace_may_access() with exec_update_lock (part 1)",
"x_generator": {
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}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64371",
"datePublished": "2026-07-25T08:50:23.981Z",
"dateReserved": "2026-07-19T15:36:31.783Z",
"dateUpdated": "2026-08-17T04:54:21.091Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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