AZL-89586
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-89586.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-89586
- Upstream
- Published
- 2026-06-05T12:16:39Z
- Modified
- 2026-08-28T17:48:10Z
- Summary
- CVE-2026-50258 affecting package xorg-x11-server-Xwayland for versions less than 24.1.12-1
- Details
-
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an incomplete fix of CVE-2025-26597. This may be used to crash the server, or for privilege escalation if the X server runs as root.
- References