CVE-2026-43125
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-43125
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-43125.html
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 6.19.6-1 |
| debian | sid | fixed | 6.19.6-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 6.12.75 |
References
- https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882
- https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6
- https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438
- https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71
- https://www.suse.com/security/cve/CVE-2026-43125.html
- https://security-tracker.debian.org/tracker/CVE-2026-43125
CWEs
CWE-787
Verify integrity in audit chain (admin only). AS-IS.