CVE-2025-39777

MEDIUM

Linux Kernel 6.16-6.16.3 - Control Flow Integrity Bypass via acomp Workspace Type Punning

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: acomp - Fix CFI failure due to type punning To avoid a crash when control flow integrity is enabled, make the workspace ("stream") free function use a consistent type, and call it through a function pointer that has that same type.

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/7ec68c59461ca846aab9b7c2b39f63ac7c8a43cf

Patch

https://git.kernel.org/stable/c/962ddc5a7a4b04c007bba0f3e7298cda13c62efd

Scores

CVSS v3 5.5

EPSS 0.0012

EPSS Percentile 2.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published

Products (8)

linux/Kernel 6.16.0 - 6.16.4linux

Linux/Linux < 6.16

Linux/Linux 42d9f6c774790d290c175e8775ce9f1366438098 - 7ec68c59461ca846aab9b7c2b39f63ac7c8a43cf

Linux/Linux 42d9f6c774790d290c175e8775ce9f1366438098 - 962ddc5a7a4b04c007bba0f3e7298cda13c62efd

Linux/Linux 6.16

Linux/Linux 6.16.4 - 6.16.*

Linux/Linux 6.17

linux/linux_kernel 6.16 - 6.16.4

Published Sep 11, 2025

Tracked Since Feb 18, 2026