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giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension

🗓️ 30 Jun 2026 10:21:54Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

giflib DoS via buffer overflow in EGifGCBToExtension from crafted Graphics Control Extension blocks and missing size validation.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.6aarch64giflib0:5.2.1-9.el9_6.2giflib-0:5.2.1-9.el9_6.2.aarch64.rpm
Red Hat Enterprise Linux9.6i686giflib0:5.2.1-9.el9_6.2giflib-0:5.2.1-9.el9_6.2.i686.rpm
Red Hat Enterprise Linux9.6ppc64legiflib0:5.2.1-9.el9_6.2giflib-0:5.2.1-9.el9_6.2.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xgiflib0:5.2.1-9.el9_6.2giflib-0:5.2.1-9.el9_6.2.s390x.rpm
Red Hat Enterprise Linux9.6x86_64giflib0:5.2.1-9.el9_6.2giflib-0:5.2.1-9.el9_6.2.x86_64.rpm
Red Hat Enterprise Linux9.6aarch64giflib-debuginfo0:5.2.1-9.el9_6.2giflib-debuginfo-0:5.2.1-9.el9_6.2.aarch64.rpm
Red Hat Enterprise Linux9.6i686giflib-debuginfo0:5.2.1-9.el9_6.2giflib-debuginfo-0:5.2.1-9.el9_6.2.i686.rpm
Red Hat Enterprise Linux9.6ppc64legiflib-debuginfo0:5.2.1-9.el9_6.2giflib-debuginfo-0:5.2.1-9.el9_6.2.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xgiflib-debuginfo0:5.2.1-9.el9_6.2giflib-debuginfo-0:5.2.1-9.el9_6.2.s390x.rpm
Red Hat Enterprise Linux9.6x86_64giflib-debuginfo0:5.2.1-9.el9_6.2giflib-debuginfo-0:5.2.1-9.el9_6.2.x86_64.rpm
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06 Jul 2026 19:36Current
7.6High risk
Vulners AI Score7.6
CVSS 3.18.2
EPSS0.00618
SSVC
5