CVE-2025-21870 (GCVE-0-2025-21870)
Vulnerability from cvelistv5
Published
2025-03-27 13:38
Modified
2026-10-21 12:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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
References
Impacted products
Vendor Product Version
Linux Linux Version: a150345aa758492e05d2934f318ce7c2566b1cfe
Version: a150345aa758492e05d2934f318ce7c2566b1cfe
Version: a150345aa758492e05d2934f318ce7c2566b1cfe
Version: a150345aa758492e05d2934f318ce7c2566b1cfe
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