Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: zero pipe read compound padding Compound response handling extends the last response iov to an eight-byte boundary. smb2_read_pipe() allocates only the payload size, so the alignment padding can expose up to seven bytes of uninitialized kernel heap memory. Allocate the aligned size and clear the unused tail before pinning the response buffer.
References
- https://git.kernel.org/stable/c/73f860489e3be2245598d1819226304fc5b87291
- https://git.kernel.org/stable/c/be15b8da4a82cf1e1f9880b2661b90770606eec1
- https://git.kernel.org/stable/c/d83a9de7cecd401c3d3e00ed6371194dcd7313e4
- https://git.kernel.org/stable/c/f188a400dd5285fec5a84548fe8dca49eee01155
FAQ
What is CVE-2026-89794?
CVE-2026-89794 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: ksmbd: zero pipe read compound padding Compound response handling extends the last response iov to an eight-byte boundary. smb2_r...
How severe is CVE-2026-89794?
CVSS scoring is not yet available for CVE-2026-89794. Check NVD for updates.
Is there a patch for CVE-2026-89794?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.