Libaom: libaom: heap-buffer-overflow read via missing bounds check in ctrl_set_layer_id

Primary CVSS: v3.1 7.1 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

EPSS: 0.002450000 probability, percentile 0.155520000 (date 2026-07-09)

Problem Types: CWE-125 | CWE-125 Out-of-bounds Read

Discovery Credit

CNA: Red Hat would like to thank The FuzzAnything Team (FuzzAnything) for reporting this issue. (en)

Solutions

ADP: RHSA-2026:30814: Red Hat Hardened Images

Workarounds

CNA: There is no complete mitigation for this vulnerability. The following measures can reduce risk: 1. If using libaom as a standalone encoder library with SVC enabled, validate that spatial_layer_id does not exceed the number of configured spatial layers before calling aom_codec_control with AV1E_SET_SVC_LAYER_ID. 2. Restrict access to encoding services to trusted clients only. 3. For Firefox and Thunderbird, ensure browsers are updated to versions that include the patched libaom (v3.14.0 or later). 4. Monitor encoding service processes for unexpected crashes (segfaults) that may indicate exploitation attempts.

ADP: There is no complete mitigation for this vulnerability. The following measures can reduce risk: 1. If using libaom as a standalone encoder library with SVC enabled, validate that spatial_layer_id does not exceed the number of configured spatial layers before calling aom_codec_control with AV1E_SET_SVC_LAYER_ID. 2. Restrict access to encoding services to trusted clients only. 3. For Firefox and Thunderbird, ensure browsers are updated to versions that include the patched libaom (v3.14.0 or later). 4. Monitor encoding service processes for unexpected crashes (segfaults) that may indicate exploitation attempts.