CVE-2025-38588 Affecting kernel-livepatch-6_4_0-150700_7_16-rt package, versions <1-150700.1.3.2


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (10th percentile)

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  • Snyk IDSNYK-SLES157-KERNELLIVEPATCH640150700716RT-13099340
  • published27 Sept 2025
  • disclosed26 Sept 2025

Introduced: 26 Sep 2025

NewCVE-2025-38588  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-livepatch-6_4_0-150700_7_16-rt to version 1-150700.1.3.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-6_4_0-150700_7_16-rt package and not the kernel-livepatch-6_4_0-150700_7_16-rt package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1