CVE-2023-52522

net: fix possible store tearing in neigh_periodic_work()

State: Published
Severity: 8.8 High
Published: Mar 2, 2024
Updated: Aug 5, 2026
Reserved: Feb 20, 2024

Description

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

net: fix possible store tearing in neigh_periodic_work()

While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list.

Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing.

I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before 95eabb075a5902f4c0834ab1fb12dc35730c05afAffected 767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before 2ea52a2fb8e87067e26bbab4efb8872639240eb0Affected 767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before 147d89ee41434b97043c2dcb17a97dc151859baaAffected 767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before f82aac8162871e87027692b36af335a2375d4580Affected 767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before a75152d233370362eebedb2643592e7c883cc9fcAffected 767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before 25563b581ba3a1f263a00e8c9a97f5e7363be6fdAffected
LinuxLinux	2.6.37Affected before 2.6.37Not affected 5.4.258 through 5.4.Not affected 5.10.198 through 5.10.Not affected 5.15.135 through 5.15.Not affected 6.1.57 through 6.1.Not affected 6.5.7 through 6.5.*Not affected 6.6 and laterNot affected

Product

Versions

LinuxLinux

767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before 95eabb075a5902f4c0834ab1fb12dc35730c05afAffected
767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before 2ea52a2fb8e87067e26bbab4efb8872639240eb0Affected
767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before 147d89ee41434b97043c2dcb17a97dc151859baaAffected
767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before f82aac8162871e87027692b36af335a2375d4580Affected
767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before a75152d233370362eebedb2643592e7c883cc9fcAffected
767e97e1e0db0d0f3152cd2f3bd3403596aedbad to before 25563b581ba3a1f263a00e8c9a97f5e7363be6fdAffected

LinuxLinux

2.6.37Affected
before 2.6.37Not affected
5.4.258 through 5.4.*Not affected
5.10.198 through 5.10.*Not affected
5.15.135 through 5.15.*Not affected
6.1.57 through 6.1.*Not affected
6.5.7 through 6.5.*Not affected
6.6 and laterNot affected

References

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