CVE-2026-93280

greybus: audio: bound the topology section sizes against the fetched size

State: Published
Severity: 8.8 High
Published: Sep 24, 2026
Updated: Oct 19, 2026
Reserved: Sep 17, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

greybus: audio: bound the topology section sizes against the fetched size

gb_audio_gb_get_topology() fetches a topology blob of a module-supplied size, and gbaudio_tplg_parse_data() then walks it by adding the module-supplied size_dais, size_controls and size_widgets fields to form the control, widget and route section offsets. Those le32 sizes are never checked against the fetched blob, so a module reporting a small topology size but large section sizes makes the offsets point past the allocation, and parsing reads out of bounds.

Reject a topology whose section sizes do not fit within the fetched size before it is parsed.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	184992e305f1de3a3d5fa446da3a2bc76be7c54a to before ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43eAffected 184992e305f1de3a3d5fa446da3a2bc76be7c54a to before dd5593aee0a0fb353e1164aff7b65e563fe1f232Affected 184992e305f1de3a3d5fa446da3a2bc76be7c54a to before 6f764363b3173d805be11e59a8f23ecee2d420d5Affected 184992e305f1de3a3d5fa446da3a2bc76be7c54a to before 52daf9de692ebac813d110eb1e677dc0e1f4a5abAffected 184992e305f1de3a3d5fa446da3a2bc76be7c54a to before d0f6eaba60705bacd9bb4ce48eab50ef3f546777Affected 184992e305f1de3a3d5fa446da3a2bc76be7c54a to before c9191f2e2f35f1209eb2dc24b31129dd47b48c16Affected 184992e305f1de3a3d5fa446da3a2bc76be7c54a to before cfcc5a41a9664eb68023aae4cd0d485b256bd7c7Affected 184992e305f1de3a3d5fa446da3a2bc76be7c54a to before 33d8c7b794d2a30637c9d3fcb478f1d3222bef1eAffected
LinuxLinux	4.9Affected before 4.9Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.52 through 6.18.Not affected 7.2.6 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

184992e305f1de3a3d5fa446da3a2bc76be7c54a to before ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43eAffected
184992e305f1de3a3d5fa446da3a2bc76be7c54a to before dd5593aee0a0fb353e1164aff7b65e563fe1f232Affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a to before 6f764363b3173d805be11e59a8f23ecee2d420d5Affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a to before 52daf9de692ebac813d110eb1e677dc0e1f4a5abAffected
184992e305f1de3a3d5fa446da3a2bc76be7c54a to before d0f6eaba60705bacd9bb4ce48eab50ef3f546777Affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a to before c9191f2e2f35f1209eb2dc24b31129dd47b48c16Affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a to before cfcc5a41a9664eb68023aae4cd0d485b256bd7c7Affected
184992e305f1de3a3d5fa446da3a2bc76be7c54a to before 33d8c7b794d2a30637c9d3fcb478f1d3222bef1eAffected

LinuxLinux

4.9Affected
before 4.9Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.52 through 6.18.*Not affected
7.2.6 through 7.2.*Not affected
7.3 and laterNot affected

References

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