- 8.8HighCVSS base score
- 0.60%Exploitation in 30 daysEPSS · top 51% 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: ksmbd: fix potencial OOB in get_file_all_info() for compound requests When a compound request consists of QUERY_DIRECTORY + QUERY_INFO (FILE_ALL_INFORMATION) and the first command consumes nearly the entire max_trans_size, get_file_all_info() would blindly call smbConvertToUTF16() with PATH_MAX, causing out-of-bounds write beyond the response buffer. In get_file_all_info(), there was a missing validation check for the client-provided OutputBufferLength before copying the filename into FileName field of the smb2_file_all_info structure. If the filename length exceeds the available buffer space, it could lead to potential buffer overflows or memory corruption during smbConvertToUTF16 conversion. This calculating the actual free buffer size using smb2_calc_max_out_buf_len() and returning -EINVAL if the buffer is insufficient and updating smbConvertToUTF16 to use the actual filename length (clamped by PATH_MAX) to ensure a safe copy operation.
Timeline
ID reserved
By Linux
- 44 days later
· 44 days later
Published
- 4 months later
· 4 months 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.60% · top 51% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected f2283680a80571ca82d710bc6ecd8f8beac67d63 – < 3a852f9d1c981fb14f6bf4e24999e0ea8088a7d7
- affected 9f297df20d93411c0b4ddad7f88ba04a7cd36e77 – < 4cca3eff2099b18672934a39cee70aed835d652c
- affected e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d – < 358cdaa1f7fbf2712cb4c5f6b59cb9a5c673c5fe
- affected e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d – < 7aec5a769d2356cbf344d85bcfd36de592ac96a5
- affected e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d – < b0cd9725fe2bcc9f37d096b132318a9060373f5d
- affected e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d – < 9d7032851d6f5adbe2739601ca456c0ad3b422f0
- affected e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d – < beef2634f81f1c086208191f7228bce1d366493d
- affected 5.15.145 – < 5.15.203
- affected 6.1.71 – < 6.1.168
- affected 6.6
- unaffected < 6.6
- unaffected 5.15.203 – ≤ 5.15.*
- unaffected 6.1.168 – ≤ 6.1.*
- unaffected 6.6.131 – ≤ 6.6.*
- unaffected 6.12.80 – ≤ 6.12.*
- unaffected 6.18.21 – ≤ 6.18.*
- unaffected 6.19.11 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References7
- https://git.kernel.org/stable/c/3a852f9d1c981fb14f6bf4e24999e0ea8088a7d7 (opens in a new tab)
- https://git.kernel.org/stable/c/4cca3eff2099b18672934a39cee70aed835d652c (opens in a new tab)
- https://git.kernel.org/stable/c/358cdaa1f7fbf2712cb4c5f6b59cb9a5c673c5fe (opens in a new tab)
- https://git.kernel.org/stable/c/7aec5a769d2356cbf344d85bcfd36de592ac96a5 (opens in a new tab)
- https://git.kernel.org/stable/c/b0cd9725fe2bcc9f37d096b132318a9060373f5d (opens in a new tab)
- https://git.kernel.org/stable/c/9d7032851d6f5adbe2739601ca456c0ad3b422f0 (opens in a new tab)
- https://git.kernel.org/stable/c/beef2634f81f1c086208191f7228bce1d366493d (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-2026-24641 (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-2026-31433)Record last updated .