CVE-2025-40170 Affecting kernel-tools package, versions <0:6.12.0-124.31.1.el10_1


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-ROCKY10-KERNELTOOLS-15249698
  • published9 Feb 2026
  • disclosed12 Nov 2025

Introduced: 12 Nov 2025

CVE-2025-40170  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 kernel-tools to version 0:6.12.0-124.31.1.el10_1 or higher.
This issue was patched in RLSA-2026:1690.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

net: use dst_dev_rcu() in sk_setup_caps()

Use RCU to protect accesses to dst->dev from sk_setup_caps() and sk_dst_gso_max_size().

Also use dst_dev_rcu() in ip6_dst_mtu_maybe_forward(), and ip_dst_mtu_maybe_forward().

ip4_dst_hoplimit() can use dst_dev_net_rcu().

CVSS Base Scores

version 3.1