ghsa-ph5r-c8gc-xg6f
Vulnerability from github
Published
2024-03-21 12:31
Modified
2024-06-26 00:31
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.

Show details on source website

To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2024-26643"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-21T11:15:28Z",
    "severity": null
  },
  "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": "2024-06-26T00:31:35Z",
  "published": "2024-03-21T12:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26643"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/291cca35818bd52a407bc37ab45a15816039e363"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/406b0241d0eb598a0b330ab20ae325537d8d8163"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5224afbc30c3ca9ba23e752f0f138729b2c48dd8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/552705a3650bbf46a22b1adedc1b04181490fc36"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d75a589bb92af1abf3b779cfcd1977ca11b27033"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2d45f467096e931044f0ab7634499879d851a5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bf"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.