CVE-2026-64138

CVE CVE-2026-64138EUVD EUVD-2026-45823Published 2026-07-19T15:40:31.000ZLast changed 2026-08-05T12:39:39.000ZCVSS 8.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smb_validate_ntsd_sid() helper to safely validate Owner SID and Group SID inside the NT Security Descriptor (smb_ntsd) retrieved from the parent directory.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <1c9d0646a9959752f11ca1080dc1ff26bd1756cb; patch: 6.12.92; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <69f030cf95488ae1186c72ac8c66fd279664ea7f; 5.15; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <f0e5c9c663badc9982e6941322eef1cb17de0f11; patch: 0; patch: 6.18.34; patch: 7.0.11; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <18d8db24b0a5b7be4829238dd4022236df02d421; patch: 7.1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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