CVE-2026-64138
highIn the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smb_va…
Vendor / product: Linux — linux kernel
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.
CVSS
8.8
8.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
Timeline (UTC)
Published: 2026-07-19 16:17
Modified: 2026-10-30 13:19
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-10-30 13:38 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linux / linux_kernel ≥5.15 <6.12.92, ≥6.13 <6.18.34, ≥6.19 <7.0.11, 7.1
Weakness classification (CWE)
NVD-CWE-noinfo
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421
Patch / mitigation: https://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cb
Patch / mitigation: https://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7f
Patch / mitigation: https://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11
References
- https://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cb 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7f 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/8efbea0253b7fa2d1960cab0fed36544ca0b41ab 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/f7c4dee323d9176b8d3f5c69018ee57ae0d4653c 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Data sources
NVD CVE API 2.0 — fetched 2026-10-30 13:38 UTC · record ↗