CVE-2025-38588

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

19/08/2025

Last modified:

07/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent infinite loop in rt6_nlmsg_size() While testing prior patch, I was able to trigger an infinite loop in rt6_nlmsg_size() in the following place: list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, fib6_siblings) { rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); } This is because fib6_del_route() and fib6_add_rt2node() uses list_del_rcu(), which can confuse rcu readers, because they might no longer see the head of the list. Restart the loop if f6i->fib6_nsiblings is zero.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	6.1.128 (including)	6.1.148 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.6.75 (including)	6.6.102 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.11.11 (including)	6.12 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.12.2 (including)	6.12.42 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.15.10 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.16 (including)	6.16.1 (excluding)
cpe:2.3:o:debian:debian_linux:11.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-38588

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools