[ALSA-2026:19343] Important: xorg-x11-server security update
Type:
security
Severity:
important
Release date:
2026-05-26
Description:
X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. Security Fix(es): * xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling (CVE-2026-33999) * xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption (CVE-2026-34001) * xorg: xwayland: X.Org X server: Information exposure and denial of service via out-of-bounds memory access (CVE-2026-34003) 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.
References:
Updated packages listed below:
Architecture Package Checksum
aarch64 xorg-x11-server-Xdmx-1.20.11-34.el9_8.aarch64.rpm 2403b2780c1ad69ea54d94c2d61c9e53971598ab30a1803120388dda1ea7b7cb
aarch64 xorg-x11-server-Xephyr-1.20.11-34.el9_8.aarch64.rpm 2956603e83657010eaf0ad6ed76e1fb97c6e0241d6ea10115738f8678af18e30
aarch64 xorg-x11-server-Xorg-1.20.11-34.el9_8.aarch64.rpm 5324f73e2122838e9caad6a54c0d1483ac8137ef0ca34e2aad837d7ed3f089e4
aarch64 xorg-x11-server-devel-1.20.11-34.el9_8.aarch64.rpm c3f59bb84c4f35bafdd85efde9df4548cb09dc441c24a88de786c148d4d92553
aarch64 xorg-x11-server-Xvfb-1.20.11-34.el9_8.aarch64.rpm c7288c826602871f0048ed7b0721e7d4f90c332b6230d06f7fd49e520815297c
aarch64 xorg-x11-server-Xnest-1.20.11-34.el9_8.aarch64.rpm c77bd7a9a8d5c58e9f5e3c677e1aec7eb26ff76bd3e1aab1988c05d19a50da61
i686 xorg-x11-server-devel-1.20.11-34.el9_8.i686.rpm 2dcfc6c88e8a30d6e686f68a65448bd6f736495fede50d5ae1926b64eec0f582
noarch xorg-x11-server-source-1.20.11-34.el9_8.noarch.rpm bb78b968af0f2f81e05afecea1ae46d98b6de0d70d3568bef2d7a8d1c64117a1
ppc64le xorg-x11-server-Xnest-1.20.11-34.el9_8.ppc64le.rpm 095a9a46abe81ed19fc132e1f6f2f1528e95bf32d6e21e66b29549a010a5aeeb
ppc64le xorg-x11-server-Xephyr-1.20.11-34.el9_8.ppc64le.rpm 34c3f2ddb4d6bbb5f479e4a3267e32ae115fdaf3a3894296f2fc60f59b6768c3
ppc64le xorg-x11-server-devel-1.20.11-34.el9_8.ppc64le.rpm 38502edc8057e3a0fd234e61dfcb1bd53bdf8e327636ede0c5272dcbe82d44ac
ppc64le xorg-x11-server-Xvfb-1.20.11-34.el9_8.ppc64le.rpm 3c03b09c7cca687eae1165450aeb1192da2c9524f77f45fc8cf475477f43b8b4
ppc64le xorg-x11-server-Xdmx-1.20.11-34.el9_8.ppc64le.rpm 5dd92945690a2dba6015f887d4bedeff5d26f2bf76d5965c6b25965434fefe07
ppc64le xorg-x11-server-common-1.20.11-34.el9_8.ppc64le.rpm d32164fc8e69319b7b18826826cf0b1f625e16b326bc594fc8b6bd15019f0085
ppc64le xorg-x11-server-Xorg-1.20.11-34.el9_8.ppc64le.rpm fed5325b7eebe1cc49c5043f9041453875d88130274bedd066643de7144d6a9c
s390x xorg-x11-server-Xorg-1.20.11-34.el9_8.s390x.rpm 4353797b0784a1057a31bc6ad5ce49827f9558a7ddc89b7d9e755b8f79b3bf50
s390x xorg-x11-server-Xdmx-1.20.11-34.el9_8.s390x.rpm 50a858676d4d0b346b3321a26cbef989ce5a4a0ddf8b8c1a985cc0ebb1bdeb88
s390x xorg-x11-server-Xephyr-1.20.11-34.el9_8.s390x.rpm 515579e28d11e064ede41221f76169716a3ef487a572139ea772769117068732
s390x xorg-x11-server-Xvfb-1.20.11-34.el9_8.s390x.rpm b129da1ed350f95f29fc435007d6faddd9229a231ef4f92d1599da01f5b00c35
s390x xorg-x11-server-Xnest-1.20.11-34.el9_8.s390x.rpm b3d785a623fcb41c4a592f391f7f4682d414dccdad0a8065fdccccdee1abb935
s390x xorg-x11-server-devel-1.20.11-34.el9_8.s390x.rpm fa4e224b60a6b2fafa161a92f76f5b5c5e8a8cbaea713766fda2cdd3162da504
x86_64 xorg-x11-server-Xnest-1.20.11-34.el9_8.x86_64.rpm 3755ee9ee9de8acdba83d15154b24a492f972719641d89f1e007a0f10e30ab2e
x86_64 xorg-x11-server-Xvfb-1.20.11-34.el9_8.x86_64.rpm 39232e906d520e36069d2ab95e93af6290fdcf39cead6311d10ea94689961581
x86_64 xorg-x11-server-Xephyr-1.20.11-34.el9_8.x86_64.rpm 5c23795a5b6e73fd0f505294099460b5a0263bd14745b521d940ff021a6c5a9c
x86_64 xorg-x11-server-devel-1.20.11-34.el9_8.x86_64.rpm 825e8fbc3a7cf0d7d66629046634bf700093d87973b4a5daa5126d6df6960160
x86_64 xorg-x11-server-Xdmx-1.20.11-34.el9_8.x86_64.rpm fb4389aac1f12453fd8579f9992ec48ba3f42f9d944946c88a43166f93ad15d0
x86_64 xorg-x11-server-Xorg-1.20.11-34.el9_8.x86_64.rpm fd068637044941a80ca1533c21e0481bcb6ed73ef82e63a43b3ca4205f2edc24
Notes:
This page is generated automatically from Red Hat security data and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.