Updated x11-server, x11-server-xwayland & tigervnc packages fix security vulnerabilities

Out-of-bounds access in X Rendering extension Animated cursors. CVE-2025-49175 Integer overflow in Big Requests Extension. CVE-2025-49176 Data leak in XFIXES Extension 6 XFixesSetClientDisconnectMode. CVE-2025-49177 Unprocessed client request via bytes to ignore. CVE-2025-49178 Integer overflow i...

CVE-2025-47712

A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service...

CVE-2025-47711 Nbdkit: nbdkit-server: off-by-one error when processing block status may lead to a denial of service

There's a flaw in the nbdkit server when handling responses from its plugins regarding the status of data blocks. If a client makes a specific request for a very large data range, and a plugin responds with an even larger single block, the nbdkit server can encounter a critical internal error,...