High7.5Red Hat & Ubuntu Linux
Denial of Service via buffer overflow in EGifGCBToExtension
CVE-2026-26740 Published Mar 18, 2026
CVE-2026-26740
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Denial of Service via buffer overflow in EGifGCBToExtension. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): giflib. Resolved in Red Hat advisory RHSA-2026:33503 — update the affected packages (`sudo dnf update`).
Affected versions
- giflib-0:5.1.4-3.el8_6.2
- giflib-0:5.1.4-3.el8_4.2
- giflib-0:5.2.1-10.el9_8.2
- giflib-0:5.2.1-9.el9_2.2
- giflib-0:5.1.4-3.el8_8.2
- giflib-0:5.2.1-9.el9_4.2
- giflib-0:5.2.1-9.el9_6.2
- giflib-0:5.1.4-5.el8_10
- giflib-0:5.2.1-22.el10_0.2
- giflib-0:5.2.1-25.el10_2
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
Fixed versions
- RHSA-2026:33503
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:33503 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 7 hours ago·verify at source
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