Memory Leak Affecting kernel-uek package, versions <0:5.4.17-2136.344.4.1.el7uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEK-10345374
  • published12 Jun 2025
  • disclosed3 Apr 2025

Introduced: 3 Apr 2025

CVE-2025-22005  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek to version 0:5.4.17-2136.344.4.1.el7uek or higher.
This issue was patched in ELSA-2025-20372.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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

ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().

fib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything when it fails.

Commit 7dd73168e273 ("ipv6: Always allocate pcpu memory in a fib6_nh") moved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init() but forgot to add cleanup for fib6_nh->nh_common.nhc_pcpu_rth_output in case it fails to allocate fib6_nh->rt6i_pcpu, resulting in memleak.

Let's call fib_nh_common_release() and clear nhc_pcpu_rth_output in the error path.

Note that we can remove the fib6_nh_release() call in nh_create_ipv6() later in net-next.git.

CVSS Base Scores

version 3.1