CVE-2026-93288
netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 24, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f4461654374576e9d5d0245fd534c46ad8509051 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < dc20050b6b12ca58066715d088e1a537535d938d 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 33d1469b0124cc0baaea7a2032123b77a81e0940 0 < 6.12.111 0 < 6.18.53
Linux / Linux
All versions affected