| Release Date: | 2025-10-30 | |
| Impact: | Moderate | What is this? |
A flaw was identified in the X.Org X server's X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.
See more information about CVE-2025-62231 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
| Base Score: | 7.3 |
| Vector String: | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H |
| Version: | 3.1 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | High |
| Integrity Impact: | Low |
| Availability Impact: | High |
| Platform | Errata | Release Date |
| Oracle Linux version 10 (xorg-x11-server-Xwayland) | ELSA-2025-19435 | 2025-11-03 |
| Oracle Linux version 8 (xorg-x11-server) | ELSA-2025-19434 | 2025-11-03 |
| Oracle Linux version 8 (xorg-x11-server-Xwayland) | ELSA-2025-19432 | 2025-11-03 |
| Oracle Linux version 9 (tigervnc) | ELSA-2025-19489 | 2025-11-03 |
| Oracle Linux version 9 (xorg-x11-server) | ELSA-2025-19433 | 2025-11-03 |
| Oracle Linux version 9 (xorg-x11-server-Xwayland) | ELSA-2025-19623 | 2025-11-04 |
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