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CVE-2022-50859

UnknownEPSS 0.21%

Last modified

CVE-2022-50859 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.21%

10.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= d5c7076b772ad7dcdb92303397b36aee8fa0d25d, < d0050ec3ebbcb3451df9a65b8460be9b9e02e80c; >= d5c7076b772ad7dcdb92303397b36aee8fa0d25d, < 9312e04b6c6bc46354ecd0cc82052a2b3df0b529; >= d5c7076b772ad7dcdb92303397b36aee8fa0d25d, < 60480291c1fcafad8425d93f771b5bcc2bd398b4; >= d5c7076b772ad7dcdb92303397b36aee8fa0d25d, < 943eb0ede74ecd609fdfd3f0b83e0d237613e526; >= d5c7076b772ad7dcdb92303397b36aee8fa0d25d, < fada9b8c95c77bb46b89e18117405bc90fce9f74; >= d5c7076b772ad7dcdb92303397b36aee8fa0d25d, < e98ecc6e94f4e6d21c06660b0f336df02836694f
LinuxLinux5.0

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2022-50859?
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.
How severe is CVE-2022-50859?
Severity scoring for CVE-2022-50859 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2022-50859?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST