CVE-2024-27397

netfilter: nf_tables: use timestamp to check for set element timeout

State: Published
Severity: 7.8 High
Published: May 9, 2024
Updated: Oct 15, 2026
Reserved: Feb 25, 2024

Description

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

netfilter: nf_tables: use timestamp to check for set element timeout

Add a timestamp field at the beginning of the transaction, store it in the nftables per-netns area.

Update set backend .insert, .deactivate and sync gc path to use the timestamp, this avoids that an element expires while control plane transaction is still unfinished.

.lookup and .update, which are used from packet path, still use the current time to check if the element has expired. And .get path and dump also since this runs lockless under rcu read size lock. Then, there is async gc which also needs to check the current time since it runs asynchronously from a workqueue.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	c3e1b005ed1cc068fc9d454a6e745830d55d251d to before f8dfda798650241c1692058713ca4fef8e429061Affected c3e1b005ed1cc068fc9d454a6e745830d55d251d to before eaf1a29ea5d7dba8e84e9e9f3b3f47d0cd540bfeAffected c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 7b17de2a71e56c10335b565cc7ad238e6d984379Affected c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 0d40e8cb1d1f56a994cdd2e015af622fdca9ed4dAffected c3e1b005ed1cc068fc9d454a6e745830d55d251d to before b45176b869673417ace338b87cf9cdb66e2eeb01Affected c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 7fa2e2960fff8322ce2ded57b5f8e9cbc450b967Affected c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 383182db8d58c4237772ba0764cded4938a235c3Affected c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 7395dfacfff65e9938ac0889dafa1ab01e987d15Affected
LinuxLinux	4.1Affected before 4.1Not affected 4.19.320 through 4.19.Not affected 5.4.282 through 5.4.Not affected 5.10.224 through 5.10.Not affected 5.15.165 through 5.15.Not affected 6.1.97 through 6.1.Not affected 6.6.84 through 6.6.Not affected 6.7.5 through 6.7.*Not affected 6.8 and laterNot affected

Product

Versions

LinuxLinux

c3e1b005ed1cc068fc9d454a6e745830d55d251d to before f8dfda798650241c1692058713ca4fef8e429061Affected
c3e1b005ed1cc068fc9d454a6e745830d55d251d to before eaf1a29ea5d7dba8e84e9e9f3b3f47d0cd540bfeAffected
c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 7b17de2a71e56c10335b565cc7ad238e6d984379Affected
c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 0d40e8cb1d1f56a994cdd2e015af622fdca9ed4dAffected
c3e1b005ed1cc068fc9d454a6e745830d55d251d to before b45176b869673417ace338b87cf9cdb66e2eeb01Affected
c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 7fa2e2960fff8322ce2ded57b5f8e9cbc450b967Affected
c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 383182db8d58c4237772ba0764cded4938a235c3Affected
c3e1b005ed1cc068fc9d454a6e745830d55d251d to before 7395dfacfff65e9938ac0889dafa1ab01e987d15Affected

LinuxLinux

4.1Affected
before 4.1Not affected
4.19.320 through 4.19.*Not affected
5.4.282 through 5.4.*Not affected
5.10.224 through 5.10.*Not affected
5.15.165 through 5.15.*Not affected
6.1.97 through 6.1.*Not affected
6.6.84 through 6.6.*Not affected
6.7.5 through 6.7.*Not affected
6.8 and laterNot affected

References

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