CVE-2026-43125

CRITICAL

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.

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 5/6/2026Modified: 10/21/2026

Related Intelligence (1)

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Rapid7

References (26)

https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882Patchhttps://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6Patchhttps://git.kernel.org/stable/c/2deafd015ea9a0e75ee5764e20eb1e16bd73efd8https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438Patchhttps://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71Patchhttps://access.redhat.com/errata/RHSA-2026:25120https://access.redhat.com/errata/RHSA-2026:25121https://access.redhat.com/errata/RHSA-2026:25217https://access.redhat.com/errata/RHSA-2026:33899https://access.redhat.com/errata/RHSA-2026:33900https://access.redhat.com/errata/RHSA-2026:34094https://access.redhat.com/errata/RHSA-2026:34095https://access.redhat.com/errata/RHSA-2026:35844https://access.redhat.com/errata/RHSA-2026:35863https://access.redhat.com/errata/RHSA-2026:36767https://access.redhat.com/errata/RHSA-2026:41236https://access.redhat.com/errata/RHSA-2026:55761https://access.redhat.com/errata/RHSA-2026:55762https://access.redhat.com/errata/RHSA-2026:55763https://access.redhat.com/errata/RHSA-2026:55837https://access.redhat.com/errata/RHSA-2026:56224https://access.redhat.com/errata/RHSA-2026:56225https://access.redhat.com/errata/RHSA-2026:59091https://access.redhat.com/security/cve/CVE-2026-43125https://bugzilla.redhat.com/show_bug.cgi?id=2467234https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43125.json