CVE-2024-57898 (GCVE-0-2024-57898)

Vulnerability from cvelistv5 – Published: 2025-01-15 13:05 – Updated: 2026-01-05 10:56
VLAI?
Title
wifi: cfg80211: clear link ID from bitmap during link delete after clean up
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: clear link ID from bitmap during link delete after clean up Currently, during link deletion, the link ID is first removed from the valid_links bitmap before performing any clean-up operations. However, some functions require the link ID to remain in the valid_links bitmap. One such example is cfg80211_cac_event(). The flow is - nl80211_remove_link() cfg80211_remove_link() ieee80211_del_intf_link() ieee80211_vif_set_links() ieee80211_vif_update_links() ieee80211_link_stop() cfg80211_cac_event() cfg80211_cac_event() requires link ID to be present but it is cleared already in cfg80211_remove_link(). Ultimately, WARN_ON() is hit. Therefore, clear the link ID from the bitmap only after completing the link clean-up.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d74380ee99b59a2e46612c12c85e701ab213f4ea , < ae07daf440d3220d0986e676317a5da66e4f9dfd (git)
Affected: d74380ee99b59a2e46612c12c85e701ab213f4ea , < b5c32ff6a3a38c74facdd1fe34c0d709a55527fd (git)
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    Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.9 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "net/mac80211/cfg.c",
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: clear link ID from bitmap during link delete after clean up\n\nCurrently, during link deletion, the link ID is first removed from the\nvalid_links bitmap before performing any clean-up operations. However, some\nfunctions require the link ID to remain in the valid_links bitmap. One\nsuch example is cfg80211_cac_event(). The flow is -\n\nnl80211_remove_link()\n    cfg80211_remove_link()\n        ieee80211_del_intf_link()\n            ieee80211_vif_set_links()\n                ieee80211_vif_update_links()\n                    ieee80211_link_stop()\n                        cfg80211_cac_event()\n\ncfg80211_cac_event() requires link ID to be present but it is cleared\nalready in cfg80211_remove_link(). Ultimately, WARN_ON() is hit.\n\nTherefore, clear the link ID from the bitmap only after completing the link\nclean-up."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T10:56:37.512Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/ae07daf440d3220d0986e676317a5da66e4f9dfd"
        },
        {
          "url": "https://git.kernel.org/stable/c/b5c32ff6a3a38c74facdd1fe34c0d709a55527fd"
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      ],
      "title": "wifi: cfg80211: clear link ID from bitmap during link delete after clean up",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-57898",
    "datePublished": "2025-01-15T13:05:49.718Z",
    "dateReserved": "2025-01-11T14:45:42.029Z",
    "dateUpdated": "2026-01-05T10:56:37.512Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.