CVEvulnerability
CVE-2021-47514
5.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2024-05-24
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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().
Affected configurations
• linux linux kernel (>= 5.10 < 5.10.85)
• linux linux kernel (>= 5.11 < 5.15.8)
• linux linux kernel 5.16
References
- https://git.kernel.org/stable/c/4b7e90672af8e0c78205db006f1b0a20ebd07f5f Patch
- https://git.kernel.org/stable/c/4dbb0dad8e63fcd0b5a117c2861d2abe7ff5f186 Patch
- https://git.kernel.org/stable/c/fe30b70ca84da9c4aca85c03ad86e7a9b89c5ded Patch
- https://git.kernel.org/stable/c/4b7e90672af8e0c78205db006f1b0a20ebd07f5f Patch
- https://git.kernel.org/stable/c/4dbb0dad8e63fcd0b5a117c2861d2abe7ff5f186 Patch
- https://git.kernel.org/stable/c/fe30b70ca84da9c4aca85c03ad86e7a9b89c5ded Patch