CVE-2026-64360hfs/hfsplus: zero-initialize buffer in hfs_bnode_read
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 23 days later
· 23 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 67ecc81f6492275c9c54280532f558483c99c90e – < 34684a04777358b2b40ac729e54c8e45359e46b3
- affected a1a60e79502279f996e55052f50cc14919020475 – < 0b189b2204f1a2612dc68f8d139fb5b80539e710
- affected fe2891a9c43ab87d1a210d61e6438ca6936e2f62 – < 8f72fd25a57a457866350359ddd27a43caa62c95
- affected 384a66b89f9540a9a8cb0f48807697dfabaece4c – < 16ca053c2be5f4f3044dccf7fc19237dc820d394
- affected efc095b35b23297e419c2ab4fc1ed1a8f0781a29 – < d2afc7ecee476f9251dd87444f7fb6a424410922
- affected a431930c9bac518bf99d6b1da526a7f37ddee8d8 – < f3461b84a4865d9b5e70fbb71da72ae044a3bcd2
- affected a431930c9bac518bf99d6b1da526a7f37ddee8d8 – < d5b45bad75cd2730b8452aed4d3b20a2b2a12576
- affected a431930c9bac518bf99d6b1da526a7f37ddee8d8 – < d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf
- affected e7d2dc2421e821e4045775e6dc226378328de6f6
- affected fc7f732984ec91f30be3e574e0644066d07f2b78
- affected eec522fd0d28106b14a59ab2d658605febe4a3bb
- affected 5.10.241 – < 5.10.261
- affected 5.15.190 – < 5.15.212
- affected 6.1.149 – < 6.1.178
- affected 6.6.103 – < 6.6.145
- affected 6.12.43 – < 6.12.96
- affected 5.4.297 – < 5.5
- affected 6.15.11 – < 6.16
- affected 6.16.2 – < 6.17
- affected 6.17
- unaffected < 6.17
- unaffected 5.10.261 – ≤ 5.10.*
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.96 – ≤ 6.12.*
- unaffected 6.18.39 – ≤ 6.18.*
- unaffected 7.1.4 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/34684a04777358b2b40ac729e54c8e45359e46b3 (opens in a new tab)
- https://git.kernel.org/stable/c/0b189b2204f1a2612dc68f8d139fb5b80539e710 (opens in a new tab)
- https://git.kernel.org/stable/c/8f72fd25a57a457866350359ddd27a43caa62c95 (opens in a new tab)
- https://git.kernel.org/stable/c/16ca053c2be5f4f3044dccf7fc19237dc820d394 (opens in a new tab)
- https://git.kernel.org/stable/c/d2afc7ecee476f9251dd87444f7fb6a424410922 (opens in a new tab)
- https://git.kernel.org/stable/c/f3461b84a4865d9b5e70fbb71da72ae044a3bcd2 (opens in a new tab)
- https://git.kernel.org/stable/c/d5b45bad75cd2730b8452aed4d3b20a2b2a12576 (opens in a new tab)
- https://git.kernel.org/stable/c/d67aadee19ffdf3cc8520c5a4f4d5b2916d30baf (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-48904 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64360)Record last updated .