ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers
In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers Other, non DAI copier widgets could have the same stream name (sname) as the ALH copier and in that case the copier->data is NULL, no alh_data is attached, which could lead to NULL pointer dereference. We could check for this NULL pointer in sof_ipc4_prepare_copier_module() and avoid the crash, but a similar loop in sof_ipc4_widget_setup_comp_dai() will miscalculate the ALH device count, causing broken audio. The correct fix is to harden the matching logic by making sure that the 1. widget is a DAI widget - so dai = w->private is valid 2. the dai (and thus the copier) is ALH copier
CVE-2025-21870
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-2025-21870
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": "a150345aa758492e05d2934f318ce7c2566b1cfe",
"lessThan": "6b6b47c1aa717a0ed3400e00a81dfea686a41d7f",
"versionType": "git"
},
{
"status": "affected",
"version": "a150345aa758492e05d2934f318ce7c2566b1cfe",
"lessThan": "87c8768a96092ce75cd47fe076db5080db7ac515",
"versionType": "git"
},
{
"status": "affected",
"version": "a150345aa758492e05d2934f318ce7c2566b1cfe",
"lessThan": "93c6c2e5801aab09ef1ef99f248f3cd323c3f152",
"versionType": "git"
},
{
"status": "affected",
"version": "a150345aa758492e05d2934f318ce7c2566b1cfe",
"lessThan": "6fd60136d256b3b948333ebdb3835f41a95ab7ef",
"versionType": "git"
}
],
"programFiles": [
"sound/soc/sof/ipc4-topology.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.17",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.13.5",
"versionType": "semver",
"lessThanOrEqual": "6.13.*"
},
{
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"sound/soc/sof/ipc4-topology.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-21870
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #45948 · Revision 1
- Added to Heist Feed
- Publisher date