CVE-2026-80741

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/log: Fix out-of-bounds read on empty message length

drm_log_draw_kmsg_record() accesses s[len - 1] to strip the trailing newline, but len is unsigned int. If len is 0, the subtraction wraps to UINT_MAX, causing an out-of-bounds read.

Add an early return when len is 0.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux25e2c2a3eff55683bbe77b108db2a7e389246666 < 16a2716910ecf7d31bf3c033ee7c506a0b00b2eeaffected
LinuxLinux25e2c2a3eff55683bbe77b108db2a7e389246666 < 16bcea56f4205314ec2aa04a7ec74e5261d253c7affected
LinuxLinux25e2c2a3eff55683bbe77b108db2a7e389246666 < 60baa179ed1333535f6e2da4133511db55278ee4affected
LinuxLinux6.14affected
LinuxLinux0 < 6.14unaffected
LinuxLinux6.18.46 <= 6.18.*unaffected
LinuxLinux7.1.10 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References