CVE-2023-52522

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux767e97e1e0db0d0f3152cd2f3bd3403596aedbad < 95eabb075a5902f4c0834ab1fb12dc35730c05afaffected
LinuxLinux767e97e1e0db0d0f3152cd2f3bd3403596aedbad < 2ea52a2fb8e87067e26bbab4efb8872639240eb0affected
LinuxLinux767e97e1e0db0d0f3152cd2f3bd3403596aedbad < 147d89ee41434b97043c2dcb17a97dc151859baaaffected
LinuxLinux767e97e1e0db0d0f3152cd2f3bd3403596aedbad < f82aac8162871e87027692b36af335a2375d4580affected
LinuxLinux767e97e1e0db0d0f3152cd2f3bd3403596aedbad < a75152d233370362eebedb2643592e7c883cc9fcaffected
LinuxLinux767e97e1e0db0d0f3152cd2f3bd3403596aedbad < 25563b581ba3a1f263a00e8c9a97f5e7363be6fdaffected
LinuxLinux2.6.37affected
LinuxLinux0 < 2.6.37unaffected
LinuxLinux5.4.258 <= 5.4.*unaffected
LinuxLinux5.10.198 <= 5.10.*unaffected
LinuxLinux5.15.135 <= 5.15.*unaffected
LinuxLinux6.1.57 <= 6.1.*unaffected
LinuxLinux6.5.7 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References