CVE-2026-93288
CVE CVE-2026-93288EUVD EUVD-2026-86167Published 2026-09-24T16:02:12.000ZLast changed 2026-09-25T12:42:45.000ZCVSS 7.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux c83fa19603bdaeef17b815713dbbe3230c8a34ee <dc20050b6b12ca58066715d088e1a537535d938d; patch: 6.12.111; patch: 0; 4.12; patch: 7.2; c83fa19603bdaeef17b815713dbbe3230c8a34ee <f4461654374576e9d5d0245fd534c46ad8509051; c83fa19603bdaeef17b815713dbbe3230c8a34ee <33d1469b0124cc0baaea7a2032123b77a81e0940; patch: 6.18.53
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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