CVE-2025-26596
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A heap overflow flaw was found in X.Org and Xwayland. The computation of the length in XkbSizeKeySyms() differs from what is written in XkbWriteKeySyms(), which may lead to a heap-based buffer overflow.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
0 < 21.1.16 | affected | ||
22.0.0 < 24.1.6 | affected | ||
| Red Hat | Red Hat Enterprise Linux 10 | 0:24.1.5-3.el10_0 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | 0:1.1.0-25.el6_10 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | 0:1.8.0-36.el7_9 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | 0:1.20.4-30.el7_9 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8 | 0:1.13.1-15.el8_10 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | 0:1.9.0-15.el8_2.13 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | 0:1.11.0-8.el8_4.12 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8.4 Telecommunications Update Service | 0:1.11.0-8.el8_4.12 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | 0:1.11.0-8.el8_4.12 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | 0:1.12.0-6.el8_6.13 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | 0:1.12.0-6.el8_6.13 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | 0:1.12.0-6.el8_6.13 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | 0:1.12.0-15.el8_8.12 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:1.14.1-1.el9_5.1 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:1.20.11-28.el9_6 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:23.2.7-3.el9_6 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | 0:1.11.0-22.el9_0.13 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | 0:1.12.0-14.el9_2.10 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | 0:1.13.1-8.el9_4.5 < * | unaffected |
Weaknesses
- CWE-787: Out-of-bounds Write
Workarounds
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
CVE Program Container
Additional References
References
- https://access.redhat.com/errata/RHSA-2025:2500
- https://access.redhat.com/errata/RHSA-2025:2502
- https://access.redhat.com/errata/RHSA-2025:2861
- https://access.redhat.com/errata/RHSA-2025:2862
- https://access.redhat.com/errata/RHSA-2025:2865
- https://access.redhat.com/errata/RHSA-2025:2866
- https://access.redhat.com/errata/RHSA-2025:2873
- https://access.redhat.com/errata/RHSA-2025:2874
- https://access.redhat.com/errata/RHSA-2025:2875
- https://access.redhat.com/errata/RHSA-2025:2879
- https://access.redhat.com/errata/RHSA-2025:2880
- https://access.redhat.com/errata/RHSA-2025:3976
- https://access.redhat.com/errata/RHSA-2025:7163
- https://access.redhat.com/errata/RHSA-2025:7165
- https://access.redhat.com/errata/RHSA-2025:7458
- https://access.redhat.com/security/cve/CVE-2025-26596
- https://bugzilla.redhat.com/show_bug.cgi?id=2345256
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