libX11: libX11: Heap-based buffer overflow via malicious X server

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...

AlmaLinux 9.2 [TuxCare] Security Update: libX11 / libX11-common / libX11-devel / libX11-xcb (ALMALINUX9.2:CLSA-2026:1793283834)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1793283834 advisory. - A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

Rocky Linux 9.6 [TuxCare] Security Update: libX11 / libX11-common / libX11-devel / libX11-xcb (ALMALINUX9.6:CLSA-2026:1793110850)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1793110850 advisory. - A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

libX11: libX11: Heap-based buffer overflow via malicious X server

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...

TencentOS Server 4: libX11 (TSSA-2026:1184)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:1184 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:...

libX11: libX11: Heap-based buffer overflow via malicious X server

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...

CentOS Linux 7 [TuxCare] Security Update: libX11 / libX11-common / libX11-devel (CENTOS7:CLSA-2026:1792812595)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1792812595 advisory. - A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

SUSE-SU-2026:24365-1 Security update for libX11

This update for libX11 fixes the following issues: - CVE-2026-88806: XkbGetMap Reply Heap-based Buffer Overflow bsc1280910. - CVE-2026-94283: Out-of-bounds read vulnerability in libX11's XIM X Input Method attribute parser bsc1281653. - CVE-2026-94284: Out-of-bounds read vulnerability in libX11's...

OESA-2026-4250 libX11 security update

Core X11 protocol client library. Security Fixes: 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 An out-of-bounds read vulnerability in libX11's XIM X Input Method attribute parser in libX11 before...

OESA-2026-4249 libX11 security update

Core X11 protocol client library. Security Fixes: 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 An out-of-bounds read vulnerability in libX11's XIM X Input Method attribute parser in libX11 before...

OESA-2026-4247 libX11 security update

Core X11 protocol client library. Security Fixes: 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 An out-of-bounds read vulnerability in libX11's XIM X Input Method attribute parser in libX11 before...

OESA-2026-4248 libX11 security update

Core X11 protocol client library. Security Fixes: 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 An out-of-bounds read vulnerability in libX11's XIM X Input Method attribute parser in libX11 before...

Updated libx11 package fixes security vulnerabilities

libX11 XkbGetMap Reply Heap-based Buffer Overflow. CVE-2026-88806 Out-of-bounds read vulnerability in libX11's XIM X Input Method attribute parser. CVE-2026-94283 Out-of-bounds read vulnerability in libX11's XIM trigger-keyregistration parser.registration parser. CVE-2026-94284 Out-of-bounds read...

MGASA-2026-0508 Updated libx11 package fixes security vulnerabilities

libX11 XkbGetMap Reply Heap-based Buffer Overflow. CVE-2026-88806 Out-of-bounds read vulnerability in libX11's XIM X Input Method attribute parser. CVE-2026-94283 Out-of-bounds read vulnerability in libX11's XIM trigger-keyregistration parser.registration parser. CVE-2026-94284 Out-of-bounds read...

Amazon Linux 2 : libX11 (ALAS-2026-3977)

The version of libX11 installed on the remote host is prior to 1.6.7-3. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3977 advisory. A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

Amazon Linux 2023 : libX11, libX11-common, libX11-devel (ALAS2023-2026-3179)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-3179 advisory. 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 Tenable has extracted the preceding description block...

Important: libX11

Issue Overview: 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 Affected Packages: libX11 Note: This advisory is applicable to Amazon Linux 2 AL2 Core repository. Visit this FAQ section for the...

Important: libX11

Issue Overview: 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 Affected Packages: libX11 Issue Correction: Run dnf update libX11 --releasever 2023.12.20261012 or dnf update --advisory...

SUSE SLES15: libX11-6 / libX11-6-32bit / libX11-data / libX11-devel / etc (SUSE-SU-2026:4500-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4500-1 advisory. - CVE-2026-88806: XkbGetMap Reply Heap-based Buffer Overflow bsc1280910. - CVE-2026-94283: out-of-bounds read vulnerability in...

SUSE SLED15: libX11-6 / libX11-6-32bit / libX11-data / libX11-devel / etc (SUSE-SU-2026:4502-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4502-1 advisory. - CVE-2026-88806: XkbGetMap Reply Heap-based Buffer Overflow bsc1280910. - CVE-2026-94283: out-of-bounds read...