CVE-2024-26643

netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

State: Published
Severity: 7.8 High
Published: Mar 21, 2024
Updated: Oct 15, 2026
Reserved: Feb 19, 2024

Description

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

netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

While the rhashtable set gc runs asynchronously, a race allows it to collect elements from anonymous sets with timeouts while it is being released from the commit path.

Mingi Cho originally reported this issue in a different path in 6.1.x with a pipapo set with low timeouts which is not possible upstream since 7395dfacfff6 ("netfilter: nf_tables: use timestamp to check for set element timeout").

Fix this by setting on the dead flag for anonymous sets to skip async gc in this case.

According to 08e4c8c5919f ("netfilter: nf_tables: mark newset as dead on transaction abort"), Florian plans to accelerate abort path by releasing objects via workqueue, therefore, this sets on the dead flag for abort path too.

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	8da1b048f9a501d3d7d38c188ba09d7d0d5b8c27 to before d75a589bb92af1abf3b779cfcd1977ca11b27033Affected bbdb3b65aa91aa0a32b212f27780b28987f2d94f to before edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bfAffected 448be0774882f95a74fa5eb7519761152add601b to before e2d45f467096e931044f0ab7634499879d851a5cAffected d19e8bf3ea4114dd21fc35da21f398203d7f7df1 to before 291cca35818bd52a407bc37ab45a15816039e363Affected ea3eb9f2192e4fc33b795673e56c97a21987f868 to before 406b0241d0eb598a0b330ab20ae325537d8d8163Affected 5f68718b34a531a556f2f50300ead2862278da26 to before b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1Affected 5f68718b34a531a556f2f50300ead2862278da26 to before 5224afbc30c3ca9ba23e752f0f138729b2c48dd8Affected 5f68718b34a531a556f2f50300ead2862278da26 to before 552705a3650bbf46a22b1adedc1b04181490fc36Affected 0624f190b5742a1527cd938295caa8dc5281d4cdAffected 5.4.262 to before 5.4.274Affected 5.10.198 to before 5.10.215Affected 5.15.134 to before 5.15.154Affected 6.1.56 to before 6.1.84Affected 6.4.11 to before 6.5Affected
LinuxLinux	6.5Affected before 6.5Not affected 5.4.274 through 5.4.Not affected 5.10.215 through 5.10.Not affected 5.15.154 through 5.15.Not affected 6.1.84 through 6.1.Not affected 6.6.24 through 6.6.Not affected 6.7.12 through 6.7.Not affected 6.8 and laterNot affected

Product

Versions

LinuxLinux

8da1b048f9a501d3d7d38c188ba09d7d0d5b8c27 to before d75a589bb92af1abf3b779cfcd1977ca11b27033Affected
bbdb3b65aa91aa0a32b212f27780b28987f2d94f to before edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bfAffected
448be0774882f95a74fa5eb7519761152add601b to before e2d45f467096e931044f0ab7634499879d851a5cAffected
d19e8bf3ea4114dd21fc35da21f398203d7f7df1 to before 291cca35818bd52a407bc37ab45a15816039e363Affected
ea3eb9f2192e4fc33b795673e56c97a21987f868 to before 406b0241d0eb598a0b330ab20ae325537d8d8163Affected
5f68718b34a531a556f2f50300ead2862278da26 to before b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1Affected
5f68718b34a531a556f2f50300ead2862278da26 to before 5224afbc30c3ca9ba23e752f0f138729b2c48dd8Affected
5f68718b34a531a556f2f50300ead2862278da26 to before 552705a3650bbf46a22b1adedc1b04181490fc36Affected
0624f190b5742a1527cd938295caa8dc5281d4cdAffected
5.4.262 to before 5.4.274Affected
5.10.198 to before 5.10.215Affected
5.15.134 to before 5.15.154Affected
6.1.56 to before 6.1.84Affected
6.4.11 to before 6.5Affected

LinuxLinux

6.5Affected
before 6.5Not affected
5.4.274 through 5.4.*Not affected
5.10.215 through 5.10.*Not affected
5.15.154 through 5.15.*Not affected
6.1.84 through 6.1.*Not affected
6.6.24 through 6.6.*Not affected
6.7.12 through 6.7.*Not affected
6.8 and laterNot affected

References

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