CVE-2025-68806

Summary

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix buffer validation by including null terminator size in EA length

The smb2_set_ea function, which handles Extended Attributes (EA), was performing buffer validation checks that incorrectly omitted the size of the null terminating character (+1 byte) for EA Name. This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where the null terminator is expected to be present in the buffer, ensuring the validation accurately reflects the total required buffer size.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd070c4dd2a5bed4e9832eec5b6c029c7d14892ea < cae52c592a07e1d3fa3338a5f064a374a5f26750affected
LinuxLinux0ba5439d9afa2722e7728df56f272c89987540a4 < a28a375a5439eb474e9f284509a407efb479c925affected
LinuxLinux0ba5439d9afa2722e7728df56f272c89987540a4 < d26af6d14da43ab92d07bc60437c62901dc522e6affected
LinuxLinux0ba5439d9afa2722e7728df56f272c89987540a4 < 6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4affected
LinuxLinux0ba5439d9afa2722e7728df56f272c89987540a4 < 95d7a890e4b03e198836d49d699408fd1867cb55affected
LinuxLinuxbb5bf157b5be1643cccc7cbbe57fcdef9ae52c2caffected
LinuxLinux1a13ecb96230e8b7b91967e292836f7b01ec8111affected
LinuxLinux404e7c01e16288b5e0171d1d8fd3328e806d0794affected
LinuxLinux6.1.52 < 6.1.160affected
LinuxLinux5.15.131 < 5.16affected
LinuxLinux6.4.15 < 6.5affected
LinuxLinux6.5.2 < 6.6affected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.1.160 <= 6.1.*unaffected
LinuxLinux6.6.120 <= 6.6.*unaffected
LinuxLinux6.12.64 <= 6.12.*unaffected
LinuxLinux6.18.3 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

References