UNKNOWN NVD
CVE-2026-93288
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state sashiko re
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state
sashiko reports: "nfnl_log_net_exit() calls nf_log_unset(), which
clears the logger pointer without an RCU grace period. Immediately after,
ops_free_list() frees the per-net state while concurrent packets might
still be executing nf_log_packet() under rcu_read_lock()."
Clear the pointer via .pre_exit to make sure rcu readers have completed
before pernet storage is free'd. The change in nf_log_syslog.c is only
done for consistency: it doesn't use pernet data.
References
- https://git.kernel.org/stable/c/33d1469b0124cc0baaea7a2032123b77a81e0940
- https://git.kernel.org/stable/c/dc20050b6b12ca58066715d088e1a537535d938d
- https://git.kernel.org/stable/c/f4461654374576e9d5d0245fd534c46ad8509051
This unknown severity vulnerability was published on 2026-09-24 via NVD.
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