Resource Leak Affecting kernel-doc package, versions <0:5.14.0-70.112.1.el9_0


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELDOC-7682210
  • published14 Aug 2024
  • disclosed16 Jul 2024

Introduced: 16 Jul 2024

CVE-2021-47624  (opens in a new tab)
CWE-402  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-doc to version 0:5.14.0-70.112.1.el9_0 or higher.
This issue was patched in RHSA-2024:5257.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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

net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change

The refcount leak issues take place in an error handling path. When the 3rd argument buf doesn't match with "offline", "online" or "remove", the function simply returns -EINVAL and forgets to decrease the reference count of a rpc_xprt object and a rpc_xprt_switch object increased by rpc_sysfs_xprt_kobj_get_xprt() and rpc_sysfs_xprt_kobj_get_xprt_switch(), causing reference count leaks of both unused objects.

Fix this issue by jumping to the error handling path labelled with out_put when buf matches none of "offline", "online" or "remove".

CVSS Scores

version 3.1