CVE-2026-43125
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
dlm: validate length in dlm_search_rsb_tree
The len parameter in dlm_dump_rsb_name() is not validated and comes from network messages. When it exceeds DLM_RESNAME_MAXLEN, it can cause out-of-bounds write in dlm_search_rsb_tree().
Add length validation to prevent potential buffer overflow.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 7210cb7a72a22303cdb225bd1aea28697a17bbae < 67288113c5e6cf9e659b4065c0ed6f16100e0c71 | affected |
| Linux | Linux | 7210cb7a72a22303cdb225bd1aea28697a17bbae < 082083c9fbd99422a0370fe2102144a231c9f5d6 | affected |
| Linux | Linux | 7210cb7a72a22303cdb225bd1aea28697a17bbae < 5f053a2e7209d326cbbc07738fa6d6893d307438 | affected |
| Linux | Linux | 7210cb7a72a22303cdb225bd1aea28697a17bbae < 080e5563f878c64e697b89e7439d730d0daad882 | affected |
| Linux | Linux | 3.4 | affected |
| Linux | Linux | 0 < 3.4 | unaffected |
| Linux | Linux | 6.12.75 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.16 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.6 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
ADP Enrichment
kernel: dlm: validate length in dlm_search_rsb_tree
Additional References
- https://access.redhat.com/security/cve/CVE-2026-43125
- https://bugzilla.redhat.com/show_bug.cgi?id=2467234
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43125.json
- https://access.redhat.com/errata/RHSA-2026:34095
- https://access.redhat.com/errata/RHSA-2026:34094
- https://access.redhat.com/errata/RHSA-2026:25217
- https://access.redhat.com/errata/RHSA-2026:25121
- https://access.redhat.com/errata/RHSA-2026:33899
- https://access.redhat.com/errata/RHSA-2026:25120
- https://access.redhat.com/errata/RHSA-2026:33900
References
- https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71
- https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6
- https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438
- https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882
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