NVD Vulnerability Detail
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CVE-2026-46155
Summary

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

smb/client: fix out-of-bounds read in smb2_compound_op()

If a server sends a truncated response but a large OutputBufferLength, and
terminates the EA list early, check_wsl_eas() returns success without
validating that the entire OutputBufferLength fits within iov_len.

Then smb2_compound_op() does:
memcpy(idata->wsl.eas, data[0], size[0]);

Where size[0] is OutputBufferLength. If iov_len is smaller than size[0],
memcpy can read beyond the end of the rsp_iov allocation and leak adjacent
kernel heap memory.

Publication Date May 28, 2026, 7:16 p.m.
Registration Date May 29, 2026, 4:13 a.m.
Last Update May 28, 2026, 10:44 p.m.
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