CVE-2026-56208

A heap buffer overflow vulnerability was found in libaom, the reference AV1 codec implementation. A flaw in the AV1 encoder's Look-Ahead Processing (LAP) mode causes the first-pass stats ring buffer wrap-around guard to be bypassed when g_lag_in_frames is set to 1 or higher. This results in a 232-byte out-of-bounds write on every encoded frame after the second, corrupting adjacent heap objects. An attacker who can influence encoder configuration in a transcoding service or WebRTC session could exploit this to cause a denial of service (process crash) or potentially achieve code execution.
References
Link Resource
https://access.redhat.com/errata/RHSA-2026:30814
https://access.redhat.com/errata/RHSA-2026:42875
https://access.redhat.com/errata/RHSA-2026:47104
https://access.redhat.com/errata/RHSA-2026:47105
https://access.redhat.com/errata/RHSA-2026:51100
https://access.redhat.com/errata/RHSA-2026:51146
https://access.redhat.com/errata/RHSA-2026:54180
https://access.redhat.com/errata/RHSA-2026:54181
https://access.redhat.com/errata/RHSA-2026:54182
https://access.redhat.com/errata/RHSA-2026:54185
https://access.redhat.com/errata/RHSA-2026:54248
https://access.redhat.com/errata/RHSA-2026:54249
https://access.redhat.com/errata/RHSA-2026:54259
https://access.redhat.com/errata/RHSA-2026:54339
https://access.redhat.com/errata/RHSA-2026:60520
https://access.redhat.com/errata/RHSA-2026:61627
https://access.redhat.com/errata/RHSA-2026:61628
https://access.redhat.com/errata/RHSA-2026:61629
https://access.redhat.com/errata/RHSA-2026:68634
https://access.redhat.com/errata/RHSA-2026:68637
https://access.redhat.com/errata/RHSA-2026:68638
https://access.redhat.com/errata/RHSA-2026:68639
https://access.redhat.com/errata/RHSA-2026:68640
https://access.redhat.com/errata/RHSA-2026:68696
https://access.redhat.com/errata/RHSA-2026:68697
https://access.redhat.com/errata/RHSA-2026:68698
https://access.redhat.com/errata/RHSA-2026:68699
https://access.redhat.com/errata/RHSA-2026:68708
https://access.redhat.com/errata/RHSA-2026:68709
https://access.redhat.com/errata/RHSA-2026:68710
https://access.redhat.com/errata/RHSA-2026:69927
https://access.redhat.com/errata/RHSA-2026:69929
https://access.redhat.com/errata/RHSA-2026:69930
https://access.redhat.com/errata/RHSA-2026:69931
https://access.redhat.com/errata/RHSA-2026:69932
https://access.redhat.com/errata/RHSA-2026:69933
https://access.redhat.com/errata/RHSA-2026:69934
https://access.redhat.com/errata/RHSA-2026:69935
https://access.redhat.com/errata/RHSA-2026:71392
https://access.redhat.com/errata/RHSA-2026:71393
https://access.redhat.com/errata/RHSA-2026:71394
https://access.redhat.com/errata/RHSA-2026:71395
https://access.redhat.com/errata/RHSA-2026:71396
https://access.redhat.com/errata/RHSA-2026:71397
https://access.redhat.com/errata/RHSA-2026:71398
https://access.redhat.com/errata/RHSA-2026:71399
https://access.redhat.com/errata/RHSA-2026:71401
https://access.redhat.com/errata/RHSA-2026:74771
https://access.redhat.com/errata/RHSA-2026:75652
https://access.redhat.com/errata/RHSA-2026:75654
https://access.redhat.com/errata/RHSA-2026:75657
https://access.redhat.com/errata/RHSA-2026:75658
https://access.redhat.com/errata/RHSA-2026:75659
https://access.redhat.com/errata/RHSA-2026:75660
https://access.redhat.com/errata/RHSA-2026:76041
https://access.redhat.com/errata/RHSA-2026:76042
https://access.redhat.com/errata/RHSA-2026:76043
https://access.redhat.com/errata/RHSA-2026:84734
https://access.redhat.com/security/cve/CVE-2026-56208
https://aomedia.googlesource.com/aom/+/243f8ae84b
https://bugzilla.redhat.com/show_bug.cgi?id=2490799
https://issues.chromium.org/issues/504317456
https://access.redhat.com/errata/RHSA-2026:30814
https://access.redhat.com/errata/RHSA-2026:42875
https://access.redhat.com/errata/RHSA-2026:47104
https://access.redhat.com/errata/RHSA-2026:47105
https://access.redhat.com/errata/RHSA-2026:51100
https://access.redhat.com/errata/RHSA-2026:51146
https://access.redhat.com/errata/RHSA-2026:54180
https://access.redhat.com/errata/RHSA-2026:54181
https://access.redhat.com/errata/RHSA-2026:54182
https://access.redhat.com/errata/RHSA-2026:54185
https://access.redhat.com/errata/RHSA-2026:54248
https://access.redhat.com/errata/RHSA-2026:54249
https://access.redhat.com/errata/RHSA-2026:54259
https://access.redhat.com/errata/RHSA-2026:54339
https://access.redhat.com/errata/RHSA-2026:60520
https://access.redhat.com/errata/RHSA-2026:61627
https://access.redhat.com/errata/RHSA-2026:61628
https://access.redhat.com/errata/RHSA-2026:61629
https://access.redhat.com/security/cve/CVE-2026-56208
https://bugzilla.redhat.com/show_bug.cgi?id=2490799
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56208.json
Configurations

No configuration.

History

19 Oct 2026, 12:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:84734 -

06 Oct 2026, 03:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:76041 -
  • () https://access.redhat.com/errata/RHSA-2026:76042 -
  • () https://access.redhat.com/errata/RHSA-2026:76043 -

05 Oct 2026, 11:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:75652 -
  • () https://access.redhat.com/errata/RHSA-2026:75654 -
  • () https://access.redhat.com/errata/RHSA-2026:75657 -
  • () https://access.redhat.com/errata/RHSA-2026:75658 -
  • () https://access.redhat.com/errata/RHSA-2026:75659 -
  • () https://access.redhat.com/errata/RHSA-2026:75660 -

02 Oct 2026, 02:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:74771 -

24 Sep 2026, 09:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:71392 -
  • () https://access.redhat.com/errata/RHSA-2026:71393 -
  • () https://access.redhat.com/errata/RHSA-2026:71394 -
  • () https://access.redhat.com/errata/RHSA-2026:71395 -
  • () https://access.redhat.com/errata/RHSA-2026:71396 -
  • () https://access.redhat.com/errata/RHSA-2026:71397 -
  • () https://access.redhat.com/errata/RHSA-2026:71398 -
  • () https://access.redhat.com/errata/RHSA-2026:71399 -
  • () https://access.redhat.com/errata/RHSA-2026:71401 -

22 Sep 2026, 13:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:69927 -
  • () https://access.redhat.com/errata/RHSA-2026:69929 -
  • () https://access.redhat.com/errata/RHSA-2026:69930 -
  • () https://access.redhat.com/errata/RHSA-2026:69931 -
  • () https://access.redhat.com/errata/RHSA-2026:69932 -
  • () https://access.redhat.com/errata/RHSA-2026:69933 -
  • () https://access.redhat.com/errata/RHSA-2026:69934 -
  • () https://access.redhat.com/errata/RHSA-2026:69935 -

21 Sep 2026, 11:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:68634 -
  • () https://access.redhat.com/errata/RHSA-2026:68637 -
  • () https://access.redhat.com/errata/RHSA-2026:68638 -
  • () https://access.redhat.com/errata/RHSA-2026:68639 -
  • () https://access.redhat.com/errata/RHSA-2026:68640 -
  • () https://access.redhat.com/errata/RHSA-2026:68696 -
  • () https://access.redhat.com/errata/RHSA-2026:68697 -
  • () https://access.redhat.com/errata/RHSA-2026:68698 -
  • () https://access.redhat.com/errata/RHSA-2026:68699 -
  • () https://access.redhat.com/errata/RHSA-2026:68708 -
  • () https://access.redhat.com/errata/RHSA-2026:68709 -
  • () https://access.redhat.com/errata/RHSA-2026:68710 -

Information

Published : 2026-06-19 17:16

Updated : 2026-10-19 12:17


NVD link : CVE-2026-56208

Mitre link : CVE-2026-56208

CVE.ORG link : CVE-2026-56208


JSON object : View

Products Affected

No product.

CWE
CWE-122

Heap-based Buffer Overflow