CVE-2026-93524EUVD-2026-112228GHSA-3QJ2-MFG9-42JQ
X.Org Server XKB SetMap Key Width/Action Count Desync Out-Of-Bounds Read
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 21.1.25, 24.1.14
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The X.Org X Server and XWayland display server software are affected by this flaw in their keyboard map handling. An authenticated X client could exploit it to read small amounts of the server's memory, which could leak information, or to crash the X server.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A buffer overread in CheckKeySyms() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to leak small amounts of information from X server memory or potentially crash the X server.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- xorg-x11-server
fixed in 21.1.25
- xwayland
fixed in 24.1.14