CVE-2025-26597
Xorg: xwayland: buffer overflow in xkbchangetypesofkey()
- State
- Published
- Severity
- 7.8 High
- Published
- Feb 25, 2025
- Updated
- Jun 29, 2026
- Reserved
- Feb 12, 2025
Description
A buffer overflow flaw was found in X.Org and Xwayland. If XkbChangeTypesOfKey() is called with a 0 group, it will resize the key symbols table to 0 but leave the key actions unchanged. If the same function is later called with a non-zero value of groups, this will cause a buffer overflow because the key actions are of the wrong size.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat |
Weaknesses
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected Products
| Product | Versions |
|---|---|
xserver |
|
Red Hat Enterprise Linux 10Red Hat |
|
Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONRed Hat |
|
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat |
|
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat |
|
Red Hat Enterprise Linux 8Red Hat |
|
Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat |
|
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat |
|
Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat |
|
Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat |
|
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat |
|
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat |
|
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat |
|
Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat |
|
Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat |
|
Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat |
|
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 8Red Hat |
References
- RHSA-2025:2500vendor-advisory
- RHSA-2025:2502vendor-advisory
- RHSA-2025:2861vendor-advisory
- RHSA-2025:2862vendor-advisory
- RHSA-2025:2865vendor-advisory
- RHSA-2025:2866vendor-advisory
- RHSA-2025:2873vendor-advisory
- RHSA-2025:2874vendor-advisory
- RHSA-2025:2875vendor-advisory
- RHSA-2025:2879vendor-advisory
- RHSA-2025:2880vendor-advisory
- RHSA-2025:3976vendor-advisory
- RHSA-2025:7163vendor-advisory
- RHSA-2025:7165vendor-advisory
- RHSA-2025:7458vendor-advisory
- https://access.redhat.com/security/cve/CVE-2025-26597vdb-entry
- RHBZ#2345255issue-tracking
- https://lists.debian.org/debian-lts-announce/2025/02/msg00036.html
- http://www.openwall.com/lists/oss-security/2026/06/02/1
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