Vulnerability Description
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.
References
- https://git.kernel.org/stable/c/60480291c1fcafad8425d93f771b5bcc2bd398b4
- https://git.kernel.org/stable/c/9312e04b6c6bc46354ecd0cc82052a2b3df0b529
- https://git.kernel.org/stable/c/943eb0ede74ecd609fdfd3f0b83e0d237613e526
- https://git.kernel.org/stable/c/d0050ec3ebbcb3451df9a65b8460be9b9e02e80c
- https://git.kernel.org/stable/c/e98ecc6e94f4e6d21c06660b0f336df02836694f
- https://git.kernel.org/stable/c/fada9b8c95c77bb46b89e18117405bc90fce9f74
FAQ
What is CVE-2022-50859?
CVE-2022-50859 is a documented vulnerability. 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") e...
How severe is CVE-2022-50859?
CVSS scoring is not yet available for CVE-2022-50859. Check NVD for updates.
Is there a patch for CVE-2022-50859?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.