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vuln-cve/data/2026/80xxx/CVE-2026-80644.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-80644",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-08-26T14:34:25.778Z",
"datePublished": "2026-08-28T06:48:55.076Z",
"dateUpdated": "2026-11-06T17:05:52.371Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-28T06:48:55.076Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: don't BUG_ON an invalid journal dinode\n\n[BUG]\nA fuzzed OCFS2 image can corrupt the current slot journal dinode while\nmount is still in progress. The mount path first reports the invalid\njournal block and then crashes in shutdown:\n\nkernel BUG at fs/ocfs2/journal.c:1034!\nOops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\nRIP: 0010:ocfs2_journal_toggle_dirty+0x2d6/0x340 fs/ocfs2/journal.c:1034\nCall Trace:\n ocfs2_journal_shutdown+0x414/0xc30 fs/ocfs2/journal.c:1116\n ocfs2_mount_volume fs/ocfs2/super.c:1785 [inline]\n ocfs2_fill_super+0x30a9/0x3cd0 fs/ocfs2/super.c:1083\n get_tree_bdev_flags+0x38b/0x640 fs/super.c:1698\n get_tree_bdev+0x24/0x40 fs/super.c:1721\n ocfs2_get_tree+0x21/0x30 fs/ocfs2/super.c:1184\n vfs_get_tree+0x9a/0x370 fs/super.c:1758\n fc_mount fs/namespace.c:1199 [inline]\n do_new_mount_fc fs/namespace.c:3642 [inline]\n do_new_mount fs/namespace.c:3718 [inline]\n path_mount+0x5b8/0x1ea0 fs/namespace.c:4028\n do_mount fs/namespace.c:4041 [inline]\n __do_sys_mount fs/namespace.c:4229 [inline]\n __se_sys_mount fs/namespace.c:4206 [inline]\n __x64_sys_mount+0x282/0x320 fs/namespace.c:4206\n ...\n\n[CAUSE]\nocfs2_journal_toggle_dirty() used to return -EIO when journal->j_bh no\nlonger contained a valid dinode, because the startup and shutdown paths\nalready handled that failure. Commit 10995aa2451a\n(\"ocfs2: Morph the haphazard OCFS2_IS_VALID_DINODE() checks.\") changed\nthe check to a BUG_ON() under the assumption that the journal dinode had\nalready been validated. That turns an unexpected invalid journal dinode\nduring mount teardown into a kernel crash instead of a normal mount\nfailure.\n\n[FIX]\nReplace the BUG_ON() with WARN_ON() and return -EIO. This keeps the\ninvariant warning for debugging, but restores the original behavior of\nfailing startup or shutdown cleanly instead of 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/journal.c"
],
"versions": [
{
"version": "10995aa2451afa20b721cc7de856cae1a13dba57",
"lessThan": "bf1d59cf2ac8a1730607ebaa0bc0dc6d00f197d0",
"status": "affected",
"versionType": "git"
},
{
"version": "10995aa2451afa20b721cc7de856cae1a13dba57",
"lessThan": "86509c5296fe46ad6bcdd83931a53c2c6b7913a8",
"status": "affected",
"versionType": "git"
},
{
"version": "10995aa2451afa20b721cc7de856cae1a13dba57",
"lessThan": "12c32a7350b670aaaaf2e01583d8648ec0c9755c",
"status": "affected",
"versionType": "git"
},
{
"version": "10995aa2451afa20b721cc7de856cae1a13dba57",
"lessThan": "b460f8d01a12061853d02c8fb693fb42450acd7d",
"status": "affected",
"versionType": "git"
},
{
"version": "10995aa2451afa20b721cc7de856cae1a13dba57",
"lessThan": "a06eec15596e5801bad59ad16cd2bf4f0fa839a1",
"status": "affected",
"versionType": "git"
},
{
"version": "10995aa2451afa20b721cc7de856cae1a13dba57",
"lessThan": "3852478d34c7baa490ba9c7374ee901a56eea577",
"status": "affected",
"versionType": "git"
},
{
"version": "10995aa2451afa20b721cc7de856cae1a13dba57",
"lessThan": "5b33f99f3e48465bd93219495381a5aef4fa967f",
"status": "affected",
"versionType": "git"
},
{
"version": "10995aa2451afa20b721cc7de856cae1a13dba57",
"lessThan": "c0438198c28b1d22c272751af5e717c11d9fa8dd",
"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/journal.c"
],
"versions": [
{
"version": "2.6.29",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.29",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.261",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.212",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.178",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.145",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.97",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.40",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1.5",
"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": "2.6.29",
"versionEndExcluding": "5.10.261"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.29",
"versionEndExcluding": "5.15.212"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.29",
"versionEndExcluding": "6.1.178"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.29",
"versionEndExcluding": "6.6.145"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.29",
"versionEndExcluding": "6.12.97"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.29",
"versionEndExcluding": "6.18.40"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.29",
"versionEndExcluding": "7.1.5"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "2.6.29",
"versionEndExcluding": "7.2"
}
]
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]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/bf1d59cf2ac8a1730607ebaa0bc0dc6d00f197d0"
},
{
"url": "https://git.kernel.org/stable/c/86509c5296fe46ad6bcdd83931a53c2c6b7913a8"
},
{
"url": "https://git.kernel.org/stable/c/12c32a7350b670aaaaf2e01583d8648ec0c9755c"
},
{
"url": "https://git.kernel.org/stable/c/b460f8d01a12061853d02c8fb693fb42450acd7d"
},
{
"url": "https://git.kernel.org/stable/c/a06eec15596e5801bad59ad16cd2bf4f0fa839a1"
},
{
"url": "https://git.kernel.org/stable/c/3852478d34c7baa490ba9c7374ee901a56eea577"
},
{
"url": "https://git.kernel.org/stable/c/5b33f99f3e48465bd93219495381a5aef4fa967f"
},
{
"url": "https://git.kernel.org/stable/c/c0438198c28b1d22c272751af5e717c11d9fa8dd"
}
],
"title": "ocfs2: don't BUG_ON an invalid journal dinode",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-80644",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T17:02:21.588154Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T17:05:52.371Z"
}
}
]
}
}