Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate EaNameLength in smb2_get_ea() smb2_get_ea() reads ea_req->EaNameLength from the client request and passes it directly to strncmp() as the comparison length without verifying that the length of the name really is the size of the input buffer received. Fix this up by properly checking the size of the name based on the value received and the overall size of the request, to prevent a later strncmp() call to use the length as a "trusted" size of the buffer. Without this check, uninitialized heap values might be slowly leaked to the client.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 6.6.136 |
References
- https://git.kernel.org/stable/c/243b206bcb5a7137e8bddd57b2eec81e1ebd3859Patch
- https://git.kernel.org/stable/c/3363a770b193f555f29d76ddf4ced3305c0ccf6dPatch
- https://git.kernel.org/stable/c/4b73376feecb3b61172fe5b4ff42bbbb8531669dPatch
- https://git.kernel.org/stable/c/551dfb15b182abad4600eaf7b37e6eb7000d5b1bPatch
- https://git.kernel.org/stable/c/66751841212c2cc196577453c37f7774ff363f02Patch
- https://git.kernel.org/stable/c/dfc6878d14acafffbe670bf2576620757a10a3d8Patch
FAQ
What is CVE-2026-31612?
CVE-2026-31612 is a vulnerability with a CVSS score of 7.5 (HIGH). In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate EaNameLength in smb2_get_ea() smb2_get_ea() reads ea_req->EaNameLength from the client request and passes it direc...
How severe is CVE-2026-31612?
CVE-2026-31612 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31612?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.