CVE-2026-56003

A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server...

Amazon Linux 2 : libXfont2, --advisory ALAS2-2026-3814 (ALAS-2026-3814)

The version of libXfont2 installed on the remote host is prior to 2.0.3-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3814 advisory. BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow CVE-2026-56001 PCF Font Parsing Heap Buffer Overflow...

openSUSE 16 Security Update : libXfont2 (openSUSE-SU-2026:21284-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21284-1 advisory. This update for libXfont2 fixes the following issues - CVE-2026-56001: BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow bsc1269018. -...

CVE-2026-56003

A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server...

UBUNTU-CVE-2026-56003

A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server...

Multiple Mozilla Firefox / Thunderbird / Seamonkey security vulnerabilities

Crossite scripting with functions prototypes. Information leak. Buffer overflows on oversized Content-Type fields in messages. Memory corruption on SVG header. Crossite scripting with img.src. DoS. JavaScript watchpoint privilege escalation. CSS image cursor property buffer overflow. Multiple...