Use-after-free in Linux kernel - CVE-2026-93050
Published: September 18, 2026
Vulnerability identifier: #VU150971
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93050
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in the ipoctal driver struct ipoctal lifetime handling when an IP-OCTAL device is removed while a tty session remains active. A local user can issue tty operations during device removal to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-93050
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/1a3258e105f711538201bdd2ac2a05b11554eabc
- https://git.kernel.org/stable/c/4a6518be316029650301f2a5e8f0def229b895d9
- https://git.kernel.org/stable/c/a4613140f01bd0fb9980e2746ed9aaa65a29b5d6
- https://git.kernel.org/stable/c/ab5f5b27a340004b92252c6a5f23bf1c6cf3b02a
- https://git.kernel.org/stable/c/b6b5d64cb161a28347d64dc3168a636c4abb68d5
- https://git.kernel.org/stable/c/c92ef8fd834521f0b788e0511976c689fe57c63c