Summary
The libX11 packages contain the core X11 protocol client library.
Security Fix(es):
* libX11: libX11: Heap-based buffer overflow via malicious X server (CVE-2026-88806)
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.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | libX11 | 1.6.8-10.el8_10 |
| AlmaLinux · 8 | libX11-common | 1.6.8-10.el8_10 |
| AlmaLinux · 8 | libX11-devel | 1.6.8-10.el8_10 |
| AlmaLinux · 8 | libX11-xcb | 1.6.8-10.el8_10 |
Vulnerabilities 1
-
High 7.5
libX11 XkbGetMap Reply Heap-based Buffer Overflow
A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.