Out-of-bounds write in Linux kernel - CVE-2026-93164
Published: September 18, 2026
Vulnerability identifier: #VU150848
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93164
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to corrupt temporary data in user code.
The vulnerability exists due to improper stack pointer handling in optimized x86 uprobes when executing code with an optimized uprobe. A local user can execute code subject to an optimized uprobe that stores a return address in the x86-64 red zone to corrupt temporary data in user code.
Affected software
Linux kernel
How to mitigate CVE-2026-93164
Install security update from vendor's repository.