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CVSS 9.8 · CRITICAL

CVE-2026-43125linux linux kernel vulnerability

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.

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Análisis

A critical vulnerability has been identified in the Linux kernel Distributed Lock Manager (DLM). This flaw allows an unauthenticated attacker to trigger an out-of-bounds write via network messages, potentially leading to remote code execution at the kernel level on affected systems.

Severidad

Puntaje: 9.8(CRITICAL)
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV: NETWORK
AC: LOW
PR: NONE
UI: NONE
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Tipo de falla (CWE): CWE-787CWE-130

EPSS

Probabilidad de explotación (próx. 30 días): 0.0043 (0.4%)
Percentil: 34.5%
EPSS: 2026-07-14

Afecta

linux:linux_kernel

Descripción técnica

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.

Publicada: 6/5/2026, 12:16:29
Última modificación: 15/7/2026, 2:21:42

Referencias

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