CVE-2026-43125
CRITICAL severity · CVSS 9.8 · Out-of-bounds write
9.8CVSS CRITICAL
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882Patch
- https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6Patch
- https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438Patch
- https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71Patch
- https://access.redhat.com/errata/RHSA-2026:25120
- https://access.redhat.com/errata/RHSA-2026:25121
- https://access.redhat.com/errata/RHSA-2026:25217
- https://access.redhat.com/errata/RHSA-2026:33899