CVE-2021-47514

published 2024-05-24

CVE-2021-47514: 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…

Priority P4 17 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

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

12 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 5.15.15-1 (bookworm)	linux 5.15.15-1 (bookworm)
linux	linux	—	—
linux	linux	>= ccdf07219da6bd1f43c6ddcde4c0e36993c7365a < 4b7e90672af8e0c78205db006f1b0a20ebd07f5f	4b7e90672af8e0c78205db006f1b0a20ebd07f5f
linux	linux	>= ccdf07219da6bd1f43c6ddcde4c0e36993c7365a < fe30b70ca84da9c4aca85c03ad86e7a9b89c5ded	fe30b70ca84da9c4aca85c03ad86e7a9b89c5ded
linux	linux	>= ccdf07219da6bd1f43c6ddcde4c0e36993c7365a < 4dbb0dad8e63fcd0b5a117c2861d2abe7ff5f186	4dbb0dad8e63fcd0b5a117c2861d2abe7ff5f186
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.92-1	5.10.92-1
linux	linux_kernel	>= 0 < 5.15.15-1	5.15.15-1
linux	linux_kernel	>= 0 < 5.15.15-1	5.15.15-1
linux	linux_kernel	>= 0 < 5.15.15-1	5.15.15-1
linux	linux_kernel	>= 5.10 < 5.10.85	5.10.85
linux	linux_kernel	>= 5.11 < 5.15.8	5.15.8

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

vendor_redhat 5.5 MEDIUM

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