OPENSUSE-SU-2026:21112-1 Security update for xwayland

This update for xwayland fixes the following issues: - CreateSaverWindow Use-After-Free Information Disclosure. bsc1266301 - Font Alias Stack-based Buffer Overflow. bsc1266294 - GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write. bsc1266300 - XKB Key Types Stack-based Buffer Overflow. bsc12662...

SUSE-SU-2026:22180-1 Security update for xwayland

This update for xwayland fixes the following issues: - CreateSaverWindow Use-After-Free Information Disclosure. bsc1266301 - Font Alias Stack-based Buffer Overflow. bsc1266294 - GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write. bsc1266300 - XKB Key Types Stack-based Buffer Overflow. bsc12662...

SUSE-SU-2026:2426-1 Security update for xwayland

This update for xwayland fixes the following issues: - CreateSaverWindow Use-After-Free Information Disclosure. bsc1266301 - Font Alias Stack-based Buffer Overflow. bsc1266294 - GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write. bsc1266300 - XKB Key Types Stack-based Buffer Overflow. bsc12662...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

Important: xorg-x11-server

Issue Overview: 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 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but...

UBUNTU-CVE-2026-50257

A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence. A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection...

UBUNTU-CVE-2026-50261

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter. A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or f...

UBUNTU-CVE-2026-50260

A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter. A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for...

CVE-2026-50260

A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter. A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for...

CVE-2026-50257

A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence. A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

OPENSUSE-SU-2026:20896-1 Security update for xorg-x11-server

This update for xorg-x11-server fixes the following issues: - CreateSaverWindow Use-After-Free Information Disclosure. bsc1266301 - DRI2 DRIGetBuffers/DRIGetBuffersWithFormat Out-Of-Bounds Write. bsc1266302 - Font Alias Stack-based Buffer Overflow. bsc1266294 - GLX ChangeDrawableAttributes...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

Security update for xorg-x11-server

This update for xorg-x11-server fixes the following issues CreateSaverWindow Use-After-Free Information Disclosure. bsc1266301 DRI2 DRIGetBuffers/DRIGetBuffersWithFormat Out-Of-Bounds Write. bsc1266302 Font Alias Stack-based Buffer Overflow. bsc1266294 GLX ChangeDrawableAttributes Out-Of-Bounds...

SUSE-SU-2026:2221-1 Security update for xorg-x11-server

This update for xorg-x11-server fixes the following issues - CreateSaverWindow Use-After-Free Information Disclosure. bsc1266301 - DRI2 DRIGetBuffers/DRIGetBuffersWithFormat Out-Of-Bounds Write. bsc1266302 - Font Alias Stack-based Buffer Overflow. bsc1266294 - GLX ChangeDrawableAttributes...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...