CVE-2026-98961 (GCVE-0-2026-98961)
Vulnerability from cvelistv5
Published
2026-10-23 12:19
Modified
2026-10-23 12:19
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
btrfs: unlock inode and extent in caller when io_uring read extent fails
btrfs_uring_read_extent() runs only after btrfs_encoded_read() has taken
the inode shared lock and the extent lock. On failure it used to unlock
in out_fail, and a pages-array allocation failure returned -ENOMEM
without unlocking at all.
Unlock in the caller instead on all failure returns, matching the
copy_to_user() error path. The deferred -EIOCBQUEUED path still unlocks
in btrfs_uring_read_finished().
References
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/btrfs/ioctl.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "2797eb38773a96914ccedeec71eb2144645400b2",
"status": "affected",
"version": "34310c442e175f286b4c06ab5caa4e0b267ea31c",
"versionType": "git"
},
{
"lessThan": "ada1fc725a4db407294ae90a0d40ef1c46f457f2",
"status": "affected",
"version": "34310c442e175f286b4c06ab5caa4e0b267ea31c",
"versionType": "git"
},
{
"lessThan": "b6e8add5d79d1f6f819a054c833bab452bd7365d",
"status": "affected",
"version": "34310c442e175f286b4c06ab5caa4e0b267ea31c",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/btrfs/ioctl.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.13"
},
{
"lessThan": "6.13",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.57",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.11",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3",
"versionStartIncluding": "6.13",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: unlock inode and extent in caller when io_uring read extent fails\n\nbtrfs_uring_read_extent() runs only after btrfs_encoded_read() has taken\nthe inode shared lock and the extent lock. On failure it used to unlock\nin out_fail, and a pages-array allocation failure returned -ENOMEM\nwithout unlocking at all.\n\nUnlock in the caller instead on all failure returns, matching the\ncopy_to_user() error path. The deferred -EIOCBQUEUED path still unlocks\nin btrfs_uring_read_finished()."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-23T12:19:29.616Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2797eb38773a96914ccedeec71eb2144645400b2"
},
{
"url": "https://git.kernel.org/stable/c/ada1fc725a4db407294ae90a0d40ef1c46f457f2"
},
{
"url": "https://git.kernel.org/stable/c/b6e8add5d79d1f6f819a054c833bab452bd7365d"
}
],
"title": "btrfs: unlock inode and extent in caller when io_uring read extent fails",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-98961",
"datePublished": "2026-10-23T12:19:29.616Z",
"dateReserved": "2026-09-25T10:25:14.382Z",
"dateUpdated": "2026-10-23T12:19:29.616Z",
"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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