CVE-2026-93517EUVD-2026-112082
X.Org Server GLX RenderLarge Heap Buffer Overflow
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 Server and XWayland, which provide the display server components on many Linux and Unix-like systems, are affected. An authenticated X client could trigger a heap buffer overflow in the GLX RenderLarge request handling, which could crash the server or allow arbitrary code to run in the X server's context.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A heap buffer overflow in handling GLX RenderLarge request where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client could cause crashes or code execution in X server context.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- xorg-x11-server
fixed in 21.1.25
- xwayland
fixed in 24.1.14