CVE-2022-50859cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message Commit d5c7076b772a ("smb3: add smb3.1.1 to default dialect list") extend the dialects from 3 to 4, but forget to decrease the extended length when specific the dialect, then the message length is larger than expected. This maybe leak some info through network because not initialize the message body. After apply this patch, the VALIDATE_NEGOTIATE_INFO message length is reduced from 28 bytes to 26 bytes.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- May 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from d5c7076b772ad7dcdb92303397b36aee8fa0d25d before d0050ec3ebbcb3451df9a65b8460be9b9e02e80c; from d5c7076b772ad7dcdb92303397b36aee8fa0d25d before 9312e04b6c6bc46354ecd0cc82052a2b3df0b529; from d5c7076b772ad7dcdb92303397b36aee8fa0d25d before 60480291c1fcafad8425d93f771b5bcc2bd398b4; from d5c7076b772ad7dcdb92303397b36aee8fa0d25d before 943eb0ede74ecd609fdfd3f0b83e0d237613e526; from d5c7076b772ad7dcdb92303397b36aee8fa0d25d before fada9b8c95c77bb46b89e18117405bc90fce9f74; from d5c7076b772ad7dcdb92303397b36aee8fa0d25d before e98ecc6e94f4e6d21c06660b0f336df02836694f | CNA record |
References
- https://git.kernel.org/stable/c/d0050ec3ebbcb3451df9a65b8460be9b9e02e80c
- https://git.kernel.org/stable/c/9312e04b6c6bc46354ecd0cc82052a2b3df0b529
- https://git.kernel.org/stable/c/60480291c1fcafad8425d93f771b5bcc2bd398b4
- https://git.kernel.org/stable/c/943eb0ede74ecd609fdfd3f0b83e0d237613e526
- https://git.kernel.org/stable/c/fada9b8c95c77bb46b89e18117405bc90fce9f74
- https://git.kernel.org/stable/c/e98ecc6e94f4e6d21c06660b0f336df02836694f
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.