ALSA: aloop: Fix peer runtime UAF during format-change stop
In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Fix peer runtime UAF during format-change stop loopback_check_format() may stop the capture side when playback starts with parameters that no longer match a running capture stream. Commit 826af7fa62e3 ("ALSA: aloop: Fix racy access at PCM trigger") moved the peer lookup under cable->lock, but the actual snd_pcm_stop() still runs after dropping that lock. A concurrent close can clear the capture entry from cable->streams[] and detach or free its runtime while the playback trigger path still holds a stale peer substream pointer. Keep a per-cable count of in-flight peer stops before dropping cable->lock, and make free_cable() wait for those stops before detaching the runtime. This preserves the existing behavior while making the peer runtime lifetime explicit.
CVE-2026-46090
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-46090
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "597603d615d2b19a9e451d8cfac24372856a522d",
"lessThan": "83bd62fa9620ac98d5d694bde14c50f98c8e7189",
"versionType": "git"
},
{
"status": "affected",
"version": "597603d615d2b19a9e451d8cfac24372856a522d",
"lessThan": "345c24b2bcf0923dfae1ab41497351c68214ff76",
"versionType": "git"
},
{
"status": "affected",
"version": "597603d615d2b19a9e451d8cfac24372856a522d",
"lessThan": "3727a3541788412c393eec236ad228d72efe19c7",
"versionType": "git"
},
{
"status": "affected",
"version": "597603d615d2b19a9e451d8cfac24372856a522d",
"lessThan": "d258cdce50ff3e02392917258e81a0ce9555c327",
"versionType": "git"
},
{
"status": "affected",
"version": "597603d615d2b19a9e451d8cfac24372856a522d",
"lessThan": "03f52a9c170431e8f10e156b9dc0dae80b3e9198",
"versionType": "git"
},
{
"status": "affected",
"version": "597603d615d2b19a9e451d8cfac24372856a522d",
"lessThan": "bdd9503c3d222d2735b56c7a8b4422ccf3de6e5c",
"versionType": "git"
},
{
"status": "affected",
"version": "597603d615d2b19a9e451d8cfac24372856a522d",
"lessThan": "5d45e34bf001344e2966dabca1897561bbc9e913",
"versionType": "git"
},
{
"status": "affected",
"version": "597603d615d2b19a9e451d8cfac24372856a522d",
"lessThan": "e5c33cdc6f402eab8abd36ecf436b22c9d3a8aff",
"versionType": "git"
}
],
"programFiles": [
"sound/drivers/aloop.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.37"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.37",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.88",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.27",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.4",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"sound/drivers/aloop.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46090
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40115 · Revision 1
- Added to Heist Feed
- Publisher date