CVE-2026-64380 (GCVE-0-2026-64380)
Vulnerability from cvelistv5
Published
2026-07-25 08:50
Modified
2026-10-19 20:38
Severity ?
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: client: harden POSIX SID length parsing posix_info_sid_size() reads sid[1] to obtain the subauthority count, but its existing boundary check still accepts buffers with only one remaining byte. Require two bytes before reading sid[1] so all client paths that reuse the helper reject truncated POSIX SIDs safely.
References
Impacted products
Vendor Product Version
Linux Linux Version: 349e13ad30b45998bb9937cfe0b32be6f951976d
Version: 349e13ad30b45998bb9937cfe0b32be6f951976d
Version: 349e13ad30b45998bb9937cfe0b32be6f951976d
Version: 349e13ad30b45998bb9937cfe0b32be6f951976d
Version: 349e13ad30b45998bb9937cfe0b32be6f951976d
Version: 349e13ad30b45998bb9937cfe0b32be6f951976d
Version: 349e13ad30b45998bb9937cfe0b32be6f951976d
Version: 349e13ad30b45998bb9937cfe0b32be6f951976d
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