ALAS2023-2026-3444

Amazon Linux 2023 Security Advisory: ALAS2023-2026-3444
Advisory Released Date: 2026-11-12
Advisory Updated Date: 2026-11-12
Severity: Important
Issue Overview:

A flaw in the X.Org Server's handling of EDID Display-Range descriptors can result in an out-of-bounds write, potentially leading to server crashes or memory corruption. (CVE-2026-109091)

A bounds-checking flaw in the X.Org Server's XvShmPutImage handling can result in an out-of-bounds read or write, potentially leading to server crashes or memory corruption. (CVE-2026-109092)

A flaw in the X.Org Server's XTestFakeInput handling can result in a stack out-of-bounds write, potentially leading to server crashes or stack memory corruption. (CVE-2026-109093)

An integer overflow flaw in the X.Org Server's glamor Xv image size computation can result in out-of-bounds reads, potentially leading to server crashes or unintended memory access. (CVE-2026-109095)

A flaw in the X.Org Server's XvPutImage length validation can allow requests with missing image data to be processed, potentially leading to server crashes or misbehavior. (CVE-2026-109096)

A flaw in the X.Org Server's XvQueryImageAttributes reply handling can result in clients receiving an incorrect data size value, potentially leading to improper buffer allocation or usage. (CVE-2026-109903)


Affected Packages:

xorg-x11-server


Issue Correction:
Run dnf update xorg-x11-server --releasever 2023.12.20261112 or dnf update --advisory ALAS2023-2026-3444 --releasever 2023.12.20261112 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:
aarch64:
    xorg-x11-server-Xorg-debuginfo-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-Xnest-debuginfo-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-Xvfb-debuginfo-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-Xephyr-debuginfo-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-Xephyr-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-debuginfo-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-devel-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-common-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-Xnest-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-debugsource-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-Xvfb-21.1.13-5.amzn2023.0.13.aarch64
    xorg-x11-server-Xorg-21.1.13-5.amzn2023.0.13.aarch64

noarch:
    xorg-x11-server-source-21.1.13-5.amzn2023.0.13.noarch

src:
    xorg-x11-server-21.1.13-5.amzn2023.0.13.src

x86_64:
    xorg-x11-server-debuginfo-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-Xorg-debuginfo-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-devel-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-debugsource-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-Xvfb-debuginfo-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-Xephyr-debuginfo-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-Xorg-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-Xnest-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-Xnest-debuginfo-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-Xephyr-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-Xvfb-21.1.13-5.amzn2023.0.13.x86_64
    xorg-x11-server-common-21.1.13-5.amzn2023.0.13.x86_64

Additional References

Release Notes:  Amazon Linux 2023 Release Notes

Red Hat: CVE-2026-109091, CVE-2026-109092, CVE-2026-109093, CVE-2026-109095, CVE-2026-109096, CVE-2026-109903

Mitre: CVE-2026-109091, CVE-2026-109092, CVE-2026-109093, CVE-2026-109095, CVE-2026-109096, CVE-2026-109903