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CVE-2025-68806

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

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected d070c4dd2a5bed4e9832eec5b6c029c7d14892ea before cae52c592a07e1d3fa3338a5f064a374a5f26750; affected 0ba5439d9afa2722e7728df56f272c89987540a4 before a28a375a5439eb474e9f284509a407efb479c925; affected 0ba5439d9afa2722e7728df56f272c89987540a4 before d26af6d14da43ab92d07bc60437c62901dc522e6; affected 0ba5439d9afa2722e7728df56f272c89987540a4 before 6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4; affected 0ba5439d9afa2722e7728df56f272c89987540a4 before 95d7a890e4b03e198836d49d699408fd1867cb55; affected bb5bf157b5be1643cccc7cbbe57fcdef9ae52c2c; affected 1a13ecb96230e8b7b91967e292836f7b01ec8111; affected 404e7c01e16288b5e0171d1d8fd3328e806d0794; affected 6.1.52 before 6.1.160; affected 5.15.131 before 5.16; affected 6.4.15 before 6.5; affected 6.5.2 before 6.6
Linux / Linuxaffected 6.6; unaffected 0 before 6.6; unaffected 6.1.160 through 6.1.*; unaffected 6.6.120 through 6.6.*; unaffected 6.12.64 through 6.12.*; unaffected 6.18.3 through 6.18.*; unaffected 6.19 through *

CWE

No CWE identifiers supplied.

References