CVEvulnerability

CVE-2026-64138

8.8 HIGH Published 2026-07-19 Modified 2026-10-21 Official page ↗

Status: Modified
Published: 2026-07-19
Last modified: 2026-10-21
Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67): 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

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.

Affected configurations

• linux linux kernel (>= 5.15 < 6.12.92) • linux linux kernel (>= 6.13 < 6.18.34) • linux linux kernel (>= 6.19 < 7.0.11) • linux linux kernel 7.1

References

https://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421 Patch
https://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cb Patch
https://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7f Patch
https://git.kernel.org/stable/c/8efbea0253b7fa2d1960cab0fed36544ca0b41ab git.kernel.org
https://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11 Patch