Description
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.
Problem types
Integer Overflow or Wraparound
Product status
0:24.1.5-5.el10_0 (rpm) before *
0:24.1.5-5.el10_1 (rpm) before *
0:21.1.3-19.el8_10 (rpm) before *
0:1.20.11-27.el8_10 (rpm) before *
0:1.15.0-8.el8_10 (rpm) before *
0:1.20.11-32.el9_6 (rpm) before *
0:1.14.1-9.el9_6 (rpm) before *
0:23.2.7-5.el9_6 (rpm) before *
0:1.15.0-6.el9_7 (rpm) before *
0:23.2.7-5.el9_7 (rpm) before *
0:1.20.11-32.el9_7 (rpm) before *
Timeline
| 2025-10-09: | Reported to Red Hat. |
| 2025-10-29: | Made public. |
Credits
Red Hat would like to thank Jan-Niklas Sohn (Trend Micro Zero Day Initiative) for reporting this issue.
References
lists.debian.org/debian-lts-announce/2025/10/msg00033.html
www.openwall.com/lists/oss-security/2025/10/28/7
access.redhat.com/errata/RHSA-2025:19432 (RHSA-2025:19432)
access.redhat.com/errata/RHSA-2025:19433 (RHSA-2025:19433)
access.redhat.com/errata/RHSA-2025:19434 (RHSA-2025:19434)
access.redhat.com/errata/RHSA-2025:19435 (RHSA-2025:19435)
access.redhat.com/errata/RHSA-2025:19489 (RHSA-2025:19489)
access.redhat.com/errata/RHSA-2025:19623 (RHSA-2025:19623)
access.redhat.com/errata/RHSA-2025:19909 (RHSA-2025:19909)
access.redhat.com/errata/RHSA-2025:20958 (RHSA-2025:20958)
access.redhat.com/errata/RHSA-2025:20960 (RHSA-2025:20960)
access.redhat.com/errata/RHSA-2025:20961 (RHSA-2025:20961)
access.redhat.com/errata/RHSA-2025:21035 (RHSA-2025:21035)
access.redhat.com/security/cve/CVE-2025-62231
bugzilla.redhat.com/show_bug.cgi?id=2402660 (RHBZ#2402660)
