Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-55999: glamor Font Atlas Heap Buffer Overflow
Fixed packages 13
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | xorg-x11-server-common | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-debuginfo | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-debugsource | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-devel | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-source | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-Xephyr | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-Xephyr-debuginfo | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-Xnest | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-Xnest-debuginfo | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-Xorg | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-Xorg-debuginfo | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-Xvfb | 0:21.1.13-5.amzn2023.0.11 |
| Amazon Linux · 2023 | xorg-x11-server-Xvfb-debuginfo | 0:21.1.13-5.amzn2023.0.11 |
Vulnerabilities 1
-
High 8.5
xorg-server / xwayland glamor font atlas Heap Buffer Overflow
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.
References
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-55999.html