Linux · Security advisory · November 7, 2026

RLSA-2026:91365: libX11 security update

RLSA-2026:91365, released November 7, 2026, fixes 1 CVE in libX11 (version 0:1.8.12-1.el9_8.1). None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
1
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0020
10th percentile

Fixed package versions

ProductReleaseFixed in
libX11rocky 90:1.8.12-1.el9_8.1

CVEs this fix closes

PriorityCVETitleImpactCVSSEPSSExploitation
High CVE-2026-88806 libX11 XkbGetMap Reply Heap-based Buffer Overflow 7.5 0.0020 None reported
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