CLSA-2026-1779290839 giflib: Fix of CVE-2026-26740

CVE-2026-26740: fix heap OOB write when rewriting truncated GCE in EGifGCBToSavedExtension...

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

A flaw was found in giflib. A remote attacker can exploit a buffer overflow vulnerability in the EGifGCBToExtension function by providing a specially crafted Graphics Control Extension GCE block. This allows overwriting an existing GCE block without proper size validation, leading to a denial of...

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

A flaw was found in giflib. A remote attacker can exploit a buffer overflow vulnerability in the EGifGCBToExtension function by providing a specially crafted Graphics Control Extension GCE block. This allows overwriting an existing GCE block without proper size validation, leading to a denial of...

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

A flaw was found in giflib. A remote attacker can exploit a buffer overflow vulnerability in the EGifGCBToExtension function by providing a specially crafted Graphics Control Extension GCE block. This allows overwriting an existing GCE block without proper size validation, leading to a denial of...

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

A flaw was found in giflib. A remote attacker can exploit a buffer overflow vulnerability in the EGifGCBToExtension function by providing a specially crafted Graphics Control Extension GCE block. This allows overwriting an existing GCE block without proper size validation, leading to a denial of...

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

A flaw was found in giflib. A remote attacker can exploit a buffer overflow vulnerability in the EGifGCBToExtension function by providing a specially crafted Graphics Control Extension GCE block. This allows overwriting an existing GCE block without proper size validation, leading to a denial of...

CVE-2026-26740

A flaw was found in giflib. A remote attacker can exploit a buffer overflow vulnerability in the EGifGCBToExtension function by providing a specially crafted Graphics Control Extension GCE block. This allows overwriting an existing GCE block without proper size validation, leading to a denial of...

Out-of-bounds Write

Overview Affected versions of this package are vulnerable to Out-of-bounds Write via the EGifGCBToExtension function in giftool. An attacker can cause a system crash or denial of service by supplying a specially crafted Graphics Control Extension block that triggers a buffer overflow. Remediation...