CVE-2025-21870
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21870
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21870.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21870
- Downstream
- Related
- Published
- 2025-03-27T13:38:22.849Z
- Modified
- 2025-11-28T02:35:09.633106Z
- Summary
- ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers
- Details
-
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 alhdata is attached, which could lead to NULL pointer dereference. We could check for this NULL pointer in sofipc4preparecopiermodule() and avoid the crash, but a similar loop in sofipc4widgetsetupcompdai() 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
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21870.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/6fd60136d256b3b948333ebdb3835f41a95ab7ef
- https://git.kernel.org/stable/c/87c8768a96092ce75cd47fe076db5080db7ac515
- https://git.kernel.org/stable/c/93c6c2e5801aab09ef1ef99f248f3cd323c3f152
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21870.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-21870