CVE-2026-88812

A flaw was found in the X.Org X Server and XWayland. An error handling issue in the X Keyboard Extension XKB geometry processing fails to clear a memory pointer after an allocation failure, leading to a double-free condition during cleanup. A local user can exploit this vulnerability by sending a...

Astra Linux – Vulnerability in xwayland, xorg-server

A flaw was discovered in the X.Org X server. This vulnerability, an out-of-bounds read, affects the handling of XKB X Keyboard Extension modifier maps. An attacker with access to the X11 server can exploit this by sending a malformed request, causing the server to read beyond its intended memory...

AlmaLinux 9.2 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-selinux / etc (ALMALINUX9.2:CLSA-2026:1783338681)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1783338681 advisory. - A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow. A client can trigger a use-after-free read after...

AlmaLinux 9.2 [TuxCare] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-devel Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1782484404)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1782484404 advisory. - A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2...

AlmaLinux 9.6 [TuxCare] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-devel Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1782224017)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1782224017 advisory. - A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2...

CentOS Linux 7 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-server / etc (CENTOS7:CLSA-2026:1784042725)

The CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1784042725 advisory. - A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB X Keyboard Extension modifier map handling. ...

CentOS Linux 7 [TuxCare] Security Update: xorg-x11-server-Xdmx / xorg-x11-server-Xephyr / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1784125510)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1784125510 advisory. - A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the...

AlmaLinux 9.2 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-selinux / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1782904895)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1782904895 advisory. - A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2...

Rocky Linux 9.6 [TuxCare] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-devel (ALMALINUX9.6:CLSA-2026:1790330410)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1790330410 advisory. - A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the...

AlmaLinux 9.2 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-selinux / etc (ALMALINUX9.2:CLSA-2026:1779581754)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1779581754 advisory. - A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the...

Rocky Linux 10.2 [CIQ] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_19125)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202619125 advisory. xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling CVE-2026-33999 xorg: xwayland: X.Org X server...

Rocky Linux 9.6 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-selinux / etc (ALMALINUX9.6:CLSA-2026:1779497454)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1779497454 advisory. - A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the...

Rocky Linux 9.6 [TuxCare] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-devel Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1782224017)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1782224017 advisory. - A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfon...

Rocky Linux 9.6 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-selinux / etc (ALMALINUX9.6:CLSA-2026:1784103643)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1784103643 advisory. - A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB X Keyboard Extension modifier map...

CentOS Linux 7 [TuxCare] Security Update: xorg-x11-server-Xdmx / xorg-x11-server-Xephyr / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1790585169)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1790585169 advisory. - An out-of-bounds read flaw was found in the X.Org X server and Xwayland in glXDispChangeDrawableAttributes. A wrong size validation...

AlmaLinux 9.6 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-selinux / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1778003374)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1778003374 advisory. - A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling,...

AlmaLinux 9.2 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-selinux / etc (ALMALINUX9.2:CLSA-2026:1786486767)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1786486767 advisory. - A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB X Keyboard Extension modifier map...

Rocky Linux 9 [CIQ] Security Update: xorg-x11-server-Xdmx / xorg-x11-server-Xdmx-debuginfo / etc Multiple Vulnerabilities (crlsa-2026_11388)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202611388 advisory. xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling CVE-2026-33999 xorg: xwayland: X.Org X server:...

AlmaLinux 9.6 [TuxCare] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-devel (ALMALINUX9.6:CLSA-2026:1790330410)

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1790330410 advisory. - A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the...

AlmaLinux 9.6 [TuxCare] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-devel Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1778069531)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1778069531 advisory. - A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling,...