Description
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a stack buffer overflow. This may be used to crash the server, or for privilege escalation if the X server runs as root.
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| enterprise-linux | โ | โ |
| unknown | โ | โ |
| x-server | โ | 21.1.23 |
| xwayland | โ | 24.1.12 |
References
Similar Threats
- Medium CVE-2022-0851
- High CVE-2022-0358
- Medium CVE-2022-0480
- Medium CVE-2022-0485
- Medium CVE-2022-0852
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