MiracleLinux 9 : libX11-1.8.12-1.el9_8.1 (AXSA:2026-2216:03)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-2216:03 advisory. libX11: libX11: Heap-based buffer overflow via malicious X server CVE-2026-88806 Tenable has extracted the preceding description block directly from the...

RHEL 9 : libX11 (RHSA-2026:91365)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:91365 advisory. The libX11 packages contain the core X11 protocol client library. Security Fixes: libX11: libX11: Heap-based buffer overflow via malicious X server...

RockyLinux 8 : libX11 (RLSA-2026:89730)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:89730 advisory. libX11: libX11: Heap-based buffer overflow via malicious X server CVE-2026-88806 Tenable has extracted the preceding description block directly from the RockyLin...

Oracle Linux 8 : libX11 (ELSA-2026-89730)

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-89730 advisory. 1.6.8-10 - CVE-2026-88806 libX11: libX11: Heap-based buffer overflow via malicious X server Resolves: https://issues.redhat.com/browse/RHEL-267125 Tenable has...

CVE-2026-88806

A flaw was found in libX11. A heap-based buffer overflow vulnerability exists during the handling of XkbGetMap replies. A remote attacker, by operating a malicious X server, could exploit this flaw to potentially execute arbitrary code or cause a denial of service on the client system. User...

CVE-2026-88806

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

CVE-2026-88806 libX11 XkbGetMap Reply Heap-based Buffer Overflow

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

EUVD-2026-83914

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

CVE-2026-88806 libX11 XkbGetMap Reply Heap-based Buffer Overflow

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

USN-6407-1 libx11 vulnerabilities

Gregory James Duck discovered that libx11 incorrectly handled certain keyboard symbols. If a user were tricked into connecting to a malicious X server, a remote attacker could use this issue to cause libx11 to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-6168-2 libx11 vulnerability

USN-6168-1 fixed a vulnerability in libx11. This update provides the corresponding update for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 ESM. Original advisory details: Gregory James Duck discovered that libx11 incorrectly handled certain Request, Event, or Error IDs. If a user were...