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vuln-cve/data/2025/68xxx/CVE-2025-68771.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-68771",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-12-24T10:30:51.035Z",
"datePublished": "2026-01-13T15:28:49.272Z",
"dateUpdated": "2026-05-11T21:53:02.168Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:53:02.168Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix kernel BUG in ocfs2_find_victim_chain\n\nsyzbot reported a kernel BUG in ocfs2_find_victim_chain() because the\n`cl_next_free_rec` field of the allocation chain list (next free slot in\nthe chain list) is 0, triggring the BUG_ON(!cl->cl_next_free_rec)\ncondition in ocfs2_find_victim_chain() and panicking the kernel.\n\nTo fix this, an if condition is introduced in ocfs2_claim_suballoc_bits(),\njust before calling ocfs2_find_victim_chain(), the code block in it being\nexecuted when either of the following conditions is true:\n\n1. `cl_next_free_rec` is equal to 0, indicating that there are no free\nchains in the allocation chain list\n2. `cl_next_free_rec` is greater than `cl_count` (the total number of\nchains in the allocation chain list)\n\nEither of them being true is indicative of the fact that there are no\nchains left for usage.\n\nThis is addressed using ocfs2_error(), which prints\nthe error log for debugging purposes, rather than panicking the kernel."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/ocfs2/suballoc.c"
],
"versions": [
{
"version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
"lessThan": "1f77e5cd563e6387fdf3bb714fcda36cd88ac5e7",
"status": "affected",
"versionType": "git"
},
{
"version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
"lessThan": "d0fd1f732ea8063cecd07a3879b7d815c7ee71ed",
"status": "affected",
"versionType": "git"
},
{
"version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
"lessThan": "b08a33d5f80efe6979a6e8f905c1a898910c21dd",
"status": "affected",
"versionType": "git"
},
{
"version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
"lessThan": "96f1b074c98c20f55a3b23d2ab44d9fb0f619869",
"status": "affected",
"versionType": "git"
},
{
"version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
"lessThan": "e24aedae71652d4119049f1fbef6532ccbe3966d",
"status": "affected",
"versionType": "git"
},
{
"version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
"lessThan": "7acc0390e0dd7474c4451d05465a677d55ad4268",
"status": "affected",
"versionType": "git"
},
{
"version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
"lessThan": "039bef30e320827bac8990c9f29d2a68cd8adb5f",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"fs/ocfs2/suballoc.c"
],
"versions": [
{
"version": "2.6.16",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.16",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.248",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.198",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.160",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.120",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.64",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.3",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.19",
"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": "2.6.16",
"versionEndExcluding": "5.10.248"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.16",
"versionEndExcluding": "5.15.198"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.16",
"versionEndExcluding": "6.1.160"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.16",
"versionEndExcluding": "6.6.120"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.16",
"versionEndExcluding": "6.12.64"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.16",
"versionEndExcluding": "6.18.3"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.16",
"versionEndExcluding": "6.19"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/1f77e5cd563e6387fdf3bb714fcda36cd88ac5e7"
},
{
"url": "https://git.kernel.org/stable/c/d0fd1f732ea8063cecd07a3879b7d815c7ee71ed"
},
{
"url": "https://git.kernel.org/stable/c/b08a33d5f80efe6979a6e8f905c1a898910c21dd"
},
{
"url": "https://git.kernel.org/stable/c/96f1b074c98c20f55a3b23d2ab44d9fb0f619869"
},
{
"url": "https://git.kernel.org/stable/c/e24aedae71652d4119049f1fbef6532ccbe3966d"
},
{
"url": "https://git.kernel.org/stable/c/7acc0390e0dd7474c4451d05465a677d55ad4268"
},
{
"url": "https://git.kernel.org/stable/c/039bef30e320827bac8990c9f29d2a68cd8adb5f"
}
],
"title": "ocfs2: fix kernel BUG in ocfs2_find_victim_chain",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}