CVE-2026-80622

CVE CVE-2026-80622EUVD EUVD-2026-67498Published 2026-08-28T06:48:41.000ZLast changed 2026-08-29T06:21:27.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: char: tlclk: fix use-after-free in tlclk_cleanup() This patch improves the module cleanup process in the tlclk driver to prevent potential use-after-free and race conditions. Currently, the file_operations structure does not specify the .owner field, which could allow the module to be unloaded while user-space processes are still interacting with the device. Additionally, the tlclk_cleanup() function frees the alarm_events memory before ensuring that blocked processes in the waitqueue are fully awakened and that the switchover_timer has completed. To address these cases, this patch: - Sets '.owner = THIS_MODULE' in tlclk_fops to safely defer module unloading while the device is in use. - Updates tlclk_cleanup() to explicitly wake up all blocked readers (wake_up_all), properly release hardware I/O regions, and safely delete the timer (timer_delete_sync) prior to freeing memory.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 5.10.261; 1a80ba88273097933f93b1f40537337416798c70 <bbf003b7794d6ad6f939fdd29f1f1bde8ac554c1; patch: 0; 1a80ba88273097933f93b1f40537337416798c70 <96902299a22d126ef5eb3f45cd5d8ceea9e6a735; 1a80ba88273097933f93b1f40537337416798c70 <42223445607a9a5df3cb1c4729abfe3a5085e7ce; patch: 6.12.97; patch: 5.15.212; 1a80ba88273097933f93b1f40537337416798c70 <166dd1d5265e067459e674c11688919901813ec2; patch: 6.6.145; 2.6.15; 1a80ba88273097933f93b1f40537337416798c70 <c3f0cd76561ae611c2d247ee96dfd559e4197cb7; 1a80ba88273097933f93b1f40537337416798c70 <764723bd67a6c8f53a8d8309211fb039e2ebcf49; patch: 7.2; patch: 6.18.40; 1a80ba88273097933f93b1f40537337416798c70 <09d8d2a46a9ec9ff728f3159a174a2ab25dd0f0a; 1a80ba88273097933f93b1f40537337416798c70 <3d5e4cc0d9dce79b0429da3134ac7b072ab9009f; patch: 6.1.178; patch: 7.1.5

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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