Описание
Security update for LibVNCServer
This update for LibVNCServer fixes the following issues:
- CVE-2026-44988: Fixed missing validation of rectangle width in tight gradient decoding can lead to server-triggered out-of-bounds write (bsc#1266459).
Список пакетов
SUSE Linux Enterprise Module for Package Hub 15 SP7
libvncserver0-0.9.10-150000.4.38.1
Ссылки
- Link for SUSE-SU-2026:2227-1
- E-Mail link for SUSE-SU-2026:2227-1
- SUSE Security Ratings
- SUSE Bug 1266459
- SUSE CVE CVE-2026-44988 page
Описание
LibVNCClient is a library for easy implementation of a VNC client. In 0.9.15 and earlier, LibVNCClient's Tight encoding decoder uses fixed-size 2048-pixel scratch buffers for the Gradient filter, but it does not reject Tight rectangles whose width is larger than 2048 pixels. A malicious VNC server can send a crafted FramebufferUpdate rectangle using Tight encoding with NoZlib | ExplicitFilter and the Gradient filter. When a LibVNCClient-based client connects, the client processes the server-controlled rectangle width and writes beyond fixed-size Gradient buffers. This vulnerability is fixed with commit 5b270544b85233668b98161323297d418a8f5fd1.
Затронутые продукты
SUSE Linux Enterprise Module for Package Hub 15 SP7:libvncserver0-0.9.10-150000.4.38.1
Ссылки
- CVE-2026-44988
- SUSE Bug 1266459