Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD 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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 1 product
🚨 HIGH Severity CVE-2026-64138 CVSS 8.8 - Linux kernel ksmbd vulnerability allows ACL inheritance bypass via unvalidated SID in parent security descriptor. Affects: Linux kernel ksmbd module Patch immediately. #CVE #Vulnerability #PatchNow https://t.co/5j5E2ajpSN
Post summary
The tweet announces a high‑severity CVE (CVE-2026-64138) affecting the Linux kernel ksmbd module, provides key technical details, and urges immediate patching.
5 of 5 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | linux | linux_kernel | - | - | - |
| OS | linux | linux_kernel | 7.1 | - | - |
| OS | linux | linux_kernel | 7.1 | - | - |
| OS | linux | linux_kernel | 7.1 | - | - |
| OS | linux | linux_kernel | 7.1 | - | - |