Answer in brief
CVE-2026-80716 records a High severity (CVSS 7.8) vulnerability in ALSA: pcm: wake linked drain waiters on unlink. 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 | >=f57f3df03a8e6010e321fa0258d3e054713c3cb7 <c172e4c53321ee6429955295ea133bc3597a3ca9 || >=f57f3df03a8e6010e321fa0258d3e054713c3cb7 <3035bb784cea3f338934f5042dd3f35225a51b2e || >=f57f3df03a8e6010e321fa0258d3e054713c3cb7 <1c1b7e8e545ce65e40f65b55c432765e058ea98f || >=f57f3df03a8e6010e321fa0258d3e054713c3cb7 <e8b784a3f4fba3ea9c4d05138ecfa784a069627f || >=f57f3df03a8e6010e321fa0258d3e054713c3cb7 <e8315330e4ec09c0cac625515400e13d0ee22b81 || >=f57f3df03a8e6010e321fa0258d3e054713c3cb7 <2940cc3cf43c72126b74ee6376314c195382023a || >=f57f3df03a8e6010e321fa0258d3e054713c3cb7 <db09bc4ab19ce548a078240d2374792523953500 || >=f57f3df03a8e6010e321fa0258d3e054713c3cb7 <f495b6c4c8594122918552c9be2b51eb71647cd9 | c172e4c53321ee6429955295ea133bc3597a3ca9, 3035bb784cea3f338934f5042dd3f35225a51b2e, 1c1b7e8e545ce65e40f65b55c432765e058ea98f, e8b784a3f4fba3ea9c4d05138ecfa784a069627f, e8315330e4ec09c0cac625515400e13d0ee22b81, 2940cc3cf43c72126b74ee6376314c195382023a, db09bc4ab19ce548a078240d2374792523953500, f495b6c4c8594122918552c9be2b51eb71647cd9 |
| Linux/Linuxgeneric | 5.1 | 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: ALSA: pcm: wake linked drain waiters on unlink snd_pcm_drain() on a linked stream parks an on-stack wait entry on the drained peer's runtime->sleep, and after schedule_timeout() removes it only if that peer is still found in the caller's group. If group membership changes during the wait and the sleep ends by signal or timeout (so autoremove_wake_function() does not run), finish_wait() is skipped and snd_pcm_drain() returns with the entry still queued on that stream's sleep list; a later wake_up() then walks a freed stack frame. This is reachable by unlinking either the drained or the draining stream. Unlike the close path (snd_pcm_drop() -> snd_pcm_post_stop()), snd_pcm_unlink() never wakes the sleep queues. Wake every group member under the group lock before the membership change, so a linked drainer is released and drops its entry while the streams are still grouped. The window was opened when snd_pcm_link_rwsem stopped being held across the wait and the removal became conditional on group membership (see Fixes). The later switch to finish_wait() kept that conditional removal, so the signal/timeout case remained.
Quoted source text, attributed separately from HOL analysis.