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CVE-2026-64380

CVE-kwetsbaarheidsdetails - eXtreme Datacenter Security Operations

Gepubliceerd 2026-07-25 08:50:30

Laatst bijgewerkt 2026-08-17 04:54:31

Toegewezen door Linux

CVSS-score 8.2

Status PUBLISHED

Beschrijving

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.

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