Answer in brief
CVE-2026-80622 records a High severity (CVSS 7.8) vulnerability in char: tlclk: fix use-after-free in tlclk_cleanup(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1a80ba88273097933f93b1f40537337416798c70 <09d8d2a46a9ec9ff728f3159a174a2ab25dd0f0a || >=1a80ba88273097933f93b1f40537337416798c70 <96902299a22d126ef5eb3f45cd5d8ceea9e6a735 || >=1a80ba88273097933f93b1f40537337416798c70 <166dd1d5265e067459e674c11688919901813ec2 || >=1a80ba88273097933f93b1f40537337416798c70 <764723bd67a6c8f53a8d8309211fb039e2ebcf49 || >=1a80ba88273097933f93b1f40537337416798c70 <c3f0cd76561ae611c2d247ee96dfd559e4197cb7 || >=1a80ba88273097933f93b1f40537337416798c70 <3d5e4cc0d9dce79b0429da3134ac7b072ab9009f || >=1a80ba88273097933f93b1f40537337416798c70 <42223445607a9a5df3cb1c4729abfe3a5085e7ce || >=1a80ba88273097933f93b1f40537337416798c70 <bbf003b7794d6ad6f939fdd29f1f1bde8ac554c1 | 09d8d2a46a9ec9ff728f3159a174a2ab25dd0f0a, 96902299a22d126ef5eb3f45cd5d8ceea9e6a735, 166dd1d5265e067459e674c11688919901813ec2, 764723bd67a6c8f53a8d8309211fb039e2ebcf49, c3f0cd76561ae611c2d247ee96dfd559e4197cb7, 3d5e4cc0d9dce79b0429da3134ac7b072ab9009f, 42223445607a9a5df3cb1c4729abfe3a5085e7ce, bbf003b7794d6ad6f939fdd29f1f1bde8ac554c1 |
| Linux/Linuxgeneric | 2.6.15 | Not reported |
Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 28, 2026
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.
Quoted source text, attributed separately from HOL analysis.