CVE-2026-64360 (GCVE-0-2026-64360)
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:
hfs/hfsplus: zero-initialize buffer in hfs_bnode_read
hfs_bnode_read() can return early without writing to the output buffer
when is_bnode_offset_valid() fails or when check_and_correct_requested_
length() corrects the length to zero. Callers such as hfs_bnode_read_
u16() and hfs_bnode_read_u8() pass stack-allocated buffers and use the
result unconditionally, leading to KMSAN uninit-value reports.
Rather than initializing at each individual call site, zero the buffer
at the start of hfs_bnode_read() before any validation checks. This
ensures all callers in both hfs and hfsplus get a deterministic zero
value regardless of which early-return path is taken.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 67ecc81f6492275c9c54280532f558483c99c90e Version: a1a60e79502279f996e55052f50cc14919020475 Version: fe2891a9c43ab87d1a210d61e6438ca6936e2f62 Version: 384a66b89f9540a9a8cb0f48807697dfabaece4c Version: efc095b35b23297e419c2ab4fc1ed1a8f0781a29 Version: a431930c9bac518bf99d6b1da526a7f37ddee8d8 Version: a431930c9bac518bf99d6b1da526a7f37ddee8d8 Version: a431930c9bac518bf99d6b1da526a7f37ddee8d8 Version: e7d2dc2421e821e4045775e6dc226378328de6f6 Version: fc7f732984ec91f30be3e574e0644066d07f2b78 Version: eec522fd0d28106b14a59ab2d658605febe4a3bb Version: 5.10.241 ≤ Version: 5.15.190 ≤ Version: 6.1.149 ≤ Version: 6.6.103 ≤ Version: 6.12.43 ≤ Version: 5.4.297 ≤ Version: 6.15.11 ≤ Version: 6.16.2 ≤ |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/hfs/bnode.c",
"fs/hfsplus/bnode.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "34684a04777358b2b40ac729e54c8e45359e46b3",
"status": "affected",
"version": "67ecc81f6492275c9c54280532f558483c99c90e",
"versionType": "git"
},
{
"lessThan": "0b189b2204f1a2612dc68f8d139fb5b80539e710",
"status": "affected",
"version": "a1a60e79502279f996e55052f50cc14919020475",
"versionType": "git"
},
{
"lessThan": "8f72fd25a57a457866350359ddd27a43caa62c95",
"status": "affected",
"version": "fe2891a9c43ab87d1a210d61e6438ca6936e2f62",
"versionType": "git"
},
{
"lessThan": "16ca053c2be5f4f3044dccf7fc19237dc820d394",
"status": "affected",
"version": "384a66b89f9540a9a8cb0f48807697dfabaece4c",
"versionType": "git"
},
{
"lessThan": "d2afc7ecee476f9251dd87444f7fb6a424410922",
"status": "affected",
"version": "efc095b35b23297e419c2ab4fc1ed1a8f0781a29",
"versionType": "git"
},
{
"lessThan": "f3461b84a4865d9b5e70fbb71da72ae044a3bcd2",
"status": "affected",
"version": "a431930c9bac518bf99d6b1da526a7f37ddee8d8",
"versionType": "git"
},
{
"lessThan": "d5b45bad75cd2730b8452aed4d3b20a2b2a12576",
"status": "affected",
"version": "a431930c9bac518bf99d6b1da526a7f37ddee8d8",
"versionType": "git"
},
{
"lessThan": "d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf",
"status": "affected",
"version": "a431930c9bac518bf99d6b1da526a7f37ddee8d8",
"versionType": "git"
},
{
"status": "affected",
"version": "e7d2dc2421e821e4045775e6dc226378328de6f6",
"versionType": "git"
},
{
"status": "affected",
"version": "fc7f732984ec91f30be3e574e0644066d07f2b78",
"versionType": "git"
},
{
"status": "affected",
"version": "eec522fd0d28106b14a59ab2d658605febe4a3bb",
"versionType": "git"
},
{
"lessThan": "5.10.261",
"status": "affected",
"version": "5.10.241",
"versionType": "semver"
},
{
"lessThan": "5.15.212",
"status": "affected",
"version": "5.15.190",
"versionType": "semver"
},
{
"lessThan": "6.1.178",
"status": "affected",
"version": "6.1.149",
"versionType": "semver"
},
{
"lessThan": "6.6.145",
"status": "affected",
"version": "6.6.103",
"versionType": "semver"
},
{
"lessThan": "6.12.96",
"status": "affected",
"version": "6.12.43",
"versionType": "semver"
},
{
"lessThan": "5.5",
"status": "affected",
"version": "5.4.297",
"versionType": "semver"
},
{
"lessThan": "6.16",
"status": "affected",
"version": "6.15.11",
"versionType": "semver"
},
{
"lessThan": "6.17",
"status": "affected",
"version": "6.16.2",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/hfs/bnode.c",
"fs/hfsplus/bnode.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.17"
},
{
"lessThan": "6.17",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.39",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.261",
"versionStartIncluding": "5.10.241",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.212",
"versionStartIncluding": "5.15.190",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.178",
"versionStartIncluding": "6.1.149",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.145",
"versionStartIncluding": "6.6.103",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.96",
"versionStartIncluding": "6.12.43",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.39",
"versionStartIncluding": "6.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.4",
"versionStartIncluding": "6.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "6.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.4.297",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.15.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.16.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhfs/hfsplus: zero-initialize buffer in hfs_bnode_read\n\nhfs_bnode_read() can return early without writing to the output buffer\nwhen is_bnode_offset_valid() fails or when check_and_correct_requested_\nlength() corrects the length to zero. Callers such as hfs_bnode_read_\nu16() and hfs_bnode_read_u8() pass stack-allocated buffers and use the\nresult unconditionally, leading to KMSAN uninit-value reports.\n\nRather than initializing at each individual call site, zero the buffer\nat the start of hfs_bnode_read() before any validation checks. This\nensures all callers in both hfs and hfsplus get a deterministic zero\nvalue regardless of which early-return path is taken."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:54:06.743Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/34684a04777358b2b40ac729e54c8e45359e46b3"
},
{
"url": "https://git.kernel.org/stable/c/0b189b2204f1a2612dc68f8d139fb5b80539e710"
},
{
"url": "https://git.kernel.org/stable/c/8f72fd25a57a457866350359ddd27a43caa62c95"
},
{
"url": "https://git.kernel.org/stable/c/16ca053c2be5f4f3044dccf7fc19237dc820d394"
},
{
"url": "https://git.kernel.org/stable/c/d2afc7ecee476f9251dd87444f7fb6a424410922"
},
{
"url": "https://git.kernel.org/stable/c/f3461b84a4865d9b5e70fbb71da72ae044a3bcd2"
},
{
"url": "https://git.kernel.org/stable/c/d5b45bad75cd2730b8452aed4d3b20a2b2a12576"
},
{
"url": "https://git.kernel.org/stable/c/d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf"
}
],
"title": "hfs/hfsplus: zero-initialize buffer in hfs_bnode_read",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64360",
"datePublished": "2026-07-25T08:50:16.573Z",
"dateReserved": "2026-07-19T15:36:31.783Z",
"dateUpdated": "2026-08-17T04:54:06.743Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
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.
Loading…
Loading…