CVE-2021-47514

MEDIUM

Linux Kernel 5.10-5.10.85 - Net Namespace Reference Count Leak in devlink_nl_cmd_reload

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: devlink: fix netns refcount leak in devlink_nl_cmd_reload() While preparing my patch series adding netns refcount tracking, I spotted bugs in devlink_nl_cmd_reload() Some error paths forgot to release a refcount on a netns. To fix this, we can reduce the scope of get_net()/put_net() section around the call to devlink_reload().

References (3)

Core 3

Core References

Patch

https://git.kernel.org/stable/c/4b7e90672af8e0c78205db006f1b0a20ebd07f5f

Patch

https://git.kernel.org/stable/c/fe30b70ca84da9c4aca85c03ad86e7a9b89c5ded

Patch

https://git.kernel.org/stable/c/4dbb0dad8e63fcd0b5a117c2861d2abe7ff5f186

Scores

CVSS v3 5.5

EPSS 0.0024

EPSS Percentile 14.6%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

Status published

Products (10)

Linux/Linux < 5.10

Linux/Linux 5.10

Linux/Linux 5.10.85 - 5.10.*

Linux/Linux 5.15.8 - 5.15.*

Linux/Linux 5.16

Linux/Linux ccdf07219da6bd1f43c6ddcde4c0e36993c7365a - 4b7e90672af8e0c78205db006f1b0a20ebd07f5f

Linux/Linux ccdf07219da6bd1f43c6ddcde4c0e36993c7365a - 4dbb0dad8e63fcd0b5a117c2861d2abe7ff5f186

Linux/Linux ccdf07219da6bd1f43c6ddcde4c0e36993c7365a - fe30b70ca84da9c4aca85c03ad86e7a9b89c5ded

linux/linux_kernel 5.16 rc1 (4 CPE variants)

linux/linux_kernel 5.10 - 5.10.85

Published May 24, 2024

Tracked Since Feb 18, 2026