Vulnerability-Lookup

GHSA-PH5R-C8GC-XG6F

Vulnerability from github – Published: 2024-03-21 12:31 – Updated: 2025-03-13 21:31

Details

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.

Severity ?

5.5 (Medium)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26643"
  ],
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-21T11:15:28Z",
    "severity": "MODERATE"
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  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout\n\nWhile the rhashtable set gc runs asynchronously, a race allows it to\ncollect elements from anonymous sets with timeouts while it is being\nreleased from the commit path.\n\nMingi Cho originally reported this issue in a different path in 6.1.x\nwith a pipapo set with low timeouts which is not possible upstream since\n7395dfacfff6 (\"netfilter: nf_tables: use timestamp to check for set\nelement timeout\").\n\nFix this by setting on the dead flag for anonymous sets to skip async gc\nin this case.\n\nAccording to 08e4c8c5919f (\"netfilter: nf_tables: mark newset as dead on\ntransaction abort\"), Florian plans to accelerate abort path by releasing\nobjects via workqueue, therefore, this sets on the dead flag for abort\npath too.",
  "id": "GHSA-ph5r-c8gc-xg6f",
  "modified": "2025-03-13T21:31:01Z",
  "published": "2024-03-21T12:31:56Z",
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CVE-2024-26643 (GCVE-0-2024-26643)

Vulnerability from cvelistv5 – Published: 2024-03-21 10:43 – Updated: 2025-05-04 12:54

Title

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

Summary

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.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d75a589bb92af1abf…
	https://git.kernel.org/stable/c/edcf1a3f182ecf8b6…
	https://git.kernel.org/stable/c/e2d45f467096e9310…
	https://git.kernel.org/stable/c/291cca35818bd52a4…
	https://git.kernel.org/stable/c/406b0241d0eb598a0…
	https://git.kernel.org/stable/c/b2d6f9a5b1cf968f1…
	https://git.kernel.org/stable/c/5224afbc30c3ca9ba…
	https://git.kernel.org/stable/c/552705a3650bbf46a…

Impacted products

Vendor

Product

Version

Linux

Affected: 8da1b048f9a501d3d7d38c188ba09d7d0d5b8c27 , < d75a589bb92af1abf3b779cfcd1977ca11b27033 (git)
Affected: bbdb3b65aa91aa0a32b212f27780b28987f2d94f , < edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bf (git)
Affected: 448be0774882f95a74fa5eb7519761152add601b , < e2d45f467096e931044f0ab7634499879d851a5c (git)
Affected: d19e8bf3ea4114dd21fc35da21f398203d7f7df1 , < 291cca35818bd52a407bc37ab45a15816039e363 (git)
Affected: ea3eb9f2192e4fc33b795673e56c97a21987f868 , < 406b0241d0eb598a0b330ab20ae325537d8d8163 (git)
Affected: 5f68718b34a531a556f2f50300ead2862278da26 , < b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1 (git)
Affected: 5f68718b34a531a556f2f50300ead2862278da26 , < 5224afbc30c3ca9ba23e752f0f138729b2c48dd8 (git)
Affected: 5f68718b34a531a556f2f50300ead2862278da26 , < 552705a3650bbf46a22b1adedc1b04181490fc36 (git)
Affected: 0624f190b5742a1527cd938295caa8dc5281d4cd (git)

Linux

Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 5.4.274 , ≤ 5.4.* (semver)
Unaffected: 5.10.215 , ≤ 5.10.* (semver)
Unaffected: 5.15.154 , ≤ 5.15.* (semver)
Unaffected: 6.1.84 , ≤ 6.1.* (semver)
Unaffected: 6.6.24 , ≤ 6.6.* (semver)
Unaffected: 6.7.12 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-PH5R-C8GC-XG6F

CVE-2024-26643 (GCVE-0-2024-26643)

Tags

Sightings

Nomenclature