xorg-x11-server-Xwayland-21.1.3-20.el8_10.3

エラータID: AXSA:2026-1277:06

Release date: 
Friday, July 17, 2026 - 11:01
Subject: 
xorg-x11-server-Xwayland-21.1.3-20.el8_10.3
Affected Channels: 
Asianux Server 8 for x86_64
Severity: 
High
Description: 

Xwayland is an X server for running X clients under Wayland.

Security Fix(es):

* xorg: X11: xserver: X.org: glamor Font Atlas Heap Buffer Overflow (CVE-2026-55999)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

CVE-2026-55999
Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks.

Solution: 

Update packages.

CVEs: 
CVE-2026-55999
Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks.
Additional Info: 

N/A

Download: 

SRPMS
  1. xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.src.rpm
    MD5: 00a0448345af66ed4212388c1a636b7a
    SHA-256: 74b47c4fdea6bb30179ad64c90d66f8ad4034e3067514028f6a19032a7db32f2
    Size: 1.32 MB

Asianux Server 8 for x86_64
  1. xorg-x11-server-Xwayland-21.1.3-20.el8_10.3.x86_64.rpm
    MD5: 15b669e29ad156c2b5f5235d82a723b3
    SHA-256: 20cd87ae071e1e80190b5832701e7c2e7265730e9ef5c3654d32a4266a36df5c
    Size: 969.41 kB