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vuln-cve/data/2026/64xxx/CVE-2026-64253.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-64253",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-07-19T15:36:31.773Z",
"datePublished": "2026-07-24T15:31:21.378Z",
"dateUpdated": "2026-11-06T16:34:31.502Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-17T04:52:05.134Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkernel/fork: clear PF_BLOCK_TS in copy_process()\n\nPF_BLOCK_TS is only set in blk_time_get_ns() when current->plug is\nnon-NULL, and blk_finish_plug() clears it via __blk_flush_plug()\nbefore NULLing the plug pointer. copy_process() breaks the\ninvariant by inheriting PF_BLOCK_TS from the parent while resetting\nthe child's plug to NULL.\n\nClear PF_BLOCK_TS alongside that assignment so callers can rely on\n\"PF_BLOCK_TS set implies current->plug != NULL\" and dereference\ncurrent->plug unguarded."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"kernel/fork.c"
],
"versions": [
{
"version": "06b23f92af87a84d70881b2ecaa72e00f7838264",
"lessThan": "ee0801aceabdf583392477baf69a290b09448b8f",
"status": "affected",
"versionType": "git"
},
{
"version": "06b23f92af87a84d70881b2ecaa72e00f7838264",
"lessThan": "99e6c712cc300883b8cbf03347d5359ec1a4d6dd",
"status": "affected",
"versionType": "git"
},
{
"version": "06b23f92af87a84d70881b2ecaa72e00f7838264",
"lessThan": "77bba61a20f1b3d206f4f90e10a7bb3cd90b9619",
"status": "affected",
"versionType": "git"
},
{
"version": "06b23f92af87a84d70881b2ecaa72e00f7838264",
"lessThan": "fd38b75c4b43295b10d69772a46d1c74dbd6fc81",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"kernel/fork.c"
],
"versions": [
{
"version": "6.9",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.9",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.95",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.38",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1.3",
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "6.12.95"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "6.18.38"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "7.1.3"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "7.2"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/ee0801aceabdf583392477baf69a290b09448b8f"
},
{
"url": "https://git.kernel.org/stable/c/99e6c712cc300883b8cbf03347d5359ec1a4d6dd"
},
{
"url": "https://git.kernel.org/stable/c/77bba61a20f1b3d206f4f90e10a7bb3cd90b9619"
},
{
"url": "https://git.kernel.org/stable/c/fd38b75c4b43295b10d69772a46d1c74dbd6fc81"
}
],
"title": "kernel/fork: clear PF_BLOCK_TS in copy_process()",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-64253",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T16:33:07.473767Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T16:34:31.502Z"
}
}
]
}
}