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SUSE-SU-2026:2428-1

Опубликовано: 17 июн. 2026
Источник: suse-cvrf

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 Server 12 SP5-LTSS
LibVNCServer-devel-0.9.9-17.47.1
libvncclient0-0.9.9-17.47.1
libvncserver0-0.9.9-17.47.1
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5
LibVNCServer-devel-0.9.9-17.47.1
libvncclient0-0.9.9-17.47.1
libvncserver0-0.9.9-17.47.1

Ссылки

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 Server 12 SP5-LTSS:LibVNCServer-devel-0.9.9-17.47.1
SUSE Linux Enterprise Server 12 SP5-LTSS:libvncclient0-0.9.9-17.47.1
SUSE Linux Enterprise Server 12 SP5-LTSS:libvncserver0-0.9.9-17.47.1
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5:LibVNCServer-devel-0.9.9-17.47.1
Ссылки