Description
Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md ↗
- https://access.redhat.com/security/cve/CVE-2026-26740 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2448747 ↗
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26740.json ↗
- https://access.redhat.com/errata/RHSA-2026:33447 ↗
- https://access.redhat.com/errata/RHSA-2026:9689 ↗
- https://access.redhat.com/errata/RHSA-2026:9693 ↗
- https://access.redhat.com/errata/RHSA-2026:33502 ↗
- https://access.redhat.com/errata/RHSA-2026:33503 ↗
- https://access.redhat.com/errata/RHSA-2026:9683 ↗
- https://access.redhat.com/errata/RHSA-2026:9686 ↗
- https://access.redhat.com/errata/RHSA-2026:33450 ↗
- https://access.redhat.com/errata/RHSA-2026:33455 ↗
- https://access.redhat.com/errata/RHSA-2026:33456 ↗
- https://access.redhat.com/errata/RHSA-2026:33509 ↗
- https://access.redhat.com/errata/RHSA-2026:33452 ↗
- https://access.redhat.com/errata/RHSA-2026:33451 ↗
- https://access.redhat.com/errata/RHSA-2026:33501 ↗
- https://access.redhat.com/errata/RHSA-2026:36004 ↗
- https://access.redhat.com/errata/RHSA-2026:36005 ↗
- https://access.redhat.com/errata/RHSA-2026:36006 ↗