Vulnerability-Lookup

GHSA-4P7X-7WC6-4GF5

Vulnerability from github – Published: 2024-04-17 18:31 – Updated: 2024-06-26 00:31

Details

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

netfilter: ipset: fix performance regression in swap operation

The patch "netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test", commit 28628fa9 fixes a race condition. But the synchronize_rcu() added to the swap function unnecessarily slows it down: it can safely be moved to destroy and use call_rcu() instead.

Eric Dumazet pointed out that simply calling the destroy functions as rcu callback does not work: sets with timeout use garbage collectors which need cancelling at destroy which can wait. Therefore the destroy functions are split into two: cancelling garbage collectors safely at executing the command received by netlink and moving the remaining part only into the rcu callback.

Severity

4.7 (Medium)


                  
                    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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  "aliases": [
    "CVE-2024-26910"
  ],
  "database_specific": {
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    "github_reviewed": false,
    "github_reviewed_at": null,
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  },
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  "modified": "2024-06-26T00:31:38Z",
  "published": "2024-04-17T18:31:32Z",
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CVE-2024-26910 (GCVE-0-2024-26910)

Vulnerability from cvelistv5 – Published: 2024-04-17 15:59 – Updated: 2026-05-23 15:39

Title

netfilter: ipset: fix performance regression in swap operation

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: fix performance regression in swap operation The patch "netfilter: ipset: fix race condition between swap/destroy and kernel side add/del/test", commit 28628fa9 fixes a race condition. But the synchronize_rcu() added to the swap function unnecessarily slows it down: it can safely be moved to destroy and use call_rcu() instead. Eric Dumazet pointed out that simply calling the destroy functions as rcu callback does not work: sets with timeout use garbage collectors which need cancelling at destroy which can wait. Therefore the destroy functions are split into two: cancelling garbage collectors safely at executing the command received by netlink and moving the remaining part only into the rcu callback.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-04-23 14:01 UTC

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/c7f2733e5011bfd13…
https://git.kernel.org/stable/c/a24d5f2ac8ef702a5…
https://git.kernel.org/stable/c/c2dc077d8f722a1c7…
https://git.kernel.org/stable/c/653bc5e6d9995d7d5…
https://git.kernel.org/stable/c/b93a6756a01f4fd2f…
https://git.kernel.org/stable/c/970709a67696b100a…
https://git.kernel.org/stable/c/97f7cf1cd80eeed3b…
https://lists.debian.org/debian-lts-announce/2024…	x_transferred

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 427deb5ba5661c4ae1cfb35955d2e01bd5f3090a , < c7f2733e5011bfd136f1ca93497394d43aa76225 (git) Affected: e7152a138a5ac77439ff4e7a7533448a7d4c260d , < a24d5f2ac8ef702a58e55ec276aad29b4bd97e05 (git) Affected: 8bb930c3a1eacec1b14817f565ff81667c7c5dfa , < c2dc077d8f722a1c73a24e674f925602ee5ece49 (git) Affected: 875ee3a09e27b7adb7006ca6d16faf7f33415aa5 , < 653bc5e6d9995d7d5f497c665b321875a626161c (git) Affected: 23c31036f862582f98386120aee55c9ae23d7899 , < b93a6756a01f4fd2f329a39216f9824c56a66397 (git) Affected: 28628fa952fefc7f2072ce6e8016968cc452b1ba , < 970709a67696b100a57b33af1a3d75fc34b747eb (git) Affected: 28628fa952fefc7f2072ce6e8016968cc452b1ba , < 97f7cf1cd80eeed3b7c808b7c12463295c751001 (git) Affected: a12606e5ad0cee8f4ba3ec68561c4d6275d2df57 (git) Affected: 5.4.264 , < 5.4.269 (semver) Affected: 5.10.204 , < 5.10.210 (semver) Affected: 5.15.143 , < 5.15.149 (semver) Affected: 6.1.68 , < 6.1.79 (semver) Affected: 6.6.7 , < 6.6.18 (semver) Affected: 4.19.302 , < 4.20 (semver)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 5.4.269 , ≤ 5.4.* (semver) Unaffected: 5.10.210 , ≤ 5.10.* (semver) Unaffected: 5.15.149 , ≤ 5.15.* (semver) Unaffected: 6.1.79 , ≤ 6.1.* (semver) Unaffected: 6.6.18 , ≤ 6.6.* (semver) Unaffected: 6.7.6 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix)

Show details on NVD website

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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