Incorrect behavior order in Linux kernel - CVE-2026-93173
Published: September 18, 2026
Vulnerability identifier: #VU150818
CSH Severity: Low
CVSS v4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93173
CWE-ID: CWE-696
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service.
The vulnerability exists due to improper execution-context handling in the bpf_prog_free hook of sleepable_lsm_hooks when a BPF program is freed while a sleepable LSM program is attached. A local privileged user can cause a BPF program to be freed to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-93173
Install security update from vendor's repository.