PT-2026-61106 · Linux · Linux Kernel

CVE-2026-53401 · Published 2026-07-19 · Updated 2026-07-20

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.1.3

Description A race condition exists in the omap2 framebuffer driver within the omapfb mmap() function and the OMAPFB SETUP PLANE ioctl. The fb mmap() entry point holds the mm lock but not the fb info->lock, while OMAPFB SETUP PLANE holds the fb info->lock but not the mm lock, allowing concurrent execution. This can lead to a use-after-free scenario where a user-space mapping is created for physical memory that has been freed because the map count was incremented for an old region reference while the mapping was based on a new region.

Recommendations Update to version 7.1.3.

Fix

Related Identifiers

CVE-2026-53401

Affected Products

Linux Kernel

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-53401 · Security Note
• https://git.kernel.org/stable/c/7958e67375aa111522086286bba13cfc0816ce8d · Note
• https://git.kernel.org/stable/c/6eb6ebcc8590007ad59ddccc8b5f9201655b33f8 · Note
• https://twitter.com/windowsforum/status/2079124698412036179 · Twitter Post