CVE-2024-35811 (GCVE-0-2024-35811)

Vulnerability from cvelistv5 – Published: 2024-05-17 13:23 – Updated: 2025-05-04 09:05
VLAI?
Title
wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach This is the candidate patch of CVE-2023-47233 : https://nvd.nist.gov/vuln/detail/CVE-2023-47233 In brcm80211 driver,it starts with the following invoking chain to start init a timeout worker: ->brcmf_usb_probe ->brcmf_usb_probe_cb ->brcmf_attach ->brcmf_bus_started ->brcmf_cfg80211_attach ->wl_init_priv ->brcmf_init_escan ->INIT_WORK(&cfg->escan_timeout_work, brcmf_cfg80211_escan_timeout_worker); If we disconnect the USB by hotplug, it will call brcmf_usb_disconnect to make cleanup. The invoking chain is : brcmf_usb_disconnect ->brcmf_usb_disconnect_cb ->brcmf_detach ->brcmf_cfg80211_detach ->kfree(cfg); While the timeout woker may still be running. This will cause a use-after-free bug on cfg in brcmf_cfg80211_escan_timeout_worker. Fix it by deleting the timer and canceling the worker in brcmf_cfg80211_detach. [arend.vanspriel@broadcom.com: keep timer delete as is and cancel work just before free]
Severity ?
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < 202c503935042272e2f9e1bb549d5f69a8681169 (git)
Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < 8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1 (git)
Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < bacb8c3ab86dcd760c15903fcee58169bc3026aa (git)
Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < 8c36205123dc57349b59b4f1a2301eb278cbc731 (git)
Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < 0b812f706fd7090be74812101114a0e165b36744 (git)
Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < 190794848e2b9d15de92d502b6ac652806904f5a (git)
Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < 6678a1e7d896c00030b31491690e8ddc9a90767a (git)
Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < 0a7591e14a8da794d0b93b5d1c6254ccb23adacb (git)
Affected: e756af5b30b008f6ffcfebf8ad0b477f6f225b62 , < 0f7352557a35ab7888bc7831411ec8a3cbe20d78 (git)
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    Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 4.19.312 , ≤ 4.19.* (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: 6.8.3 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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Show details on NVD website

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\"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/202c503935042272e2f9e1bb549d5f69a8681169\"}, {\"url\": \"https://git.kernel.org/stable/c/8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1\"}, {\"url\": \"https://git.kernel.org/stable/c/bacb8c3ab86dcd760c15903fcee58169bc3026aa\"}, {\"url\": \"https://git.kernel.org/stable/c/8c36205123dc57349b59b4f1a2301eb278cbc731\"}, {\"url\": \"https://git.kernel.org/stable/c/0b812f706fd7090be74812101114a0e165b36744\"}, {\"url\": \"https://git.kernel.org/stable/c/190794848e2b9d15de92d502b6ac652806904f5a\"}, {\"url\": \"https://git.kernel.org/stable/c/6678a1e7d896c00030b31491690e8ddc9a90767a\"}, {\"url\": \"https://git.kernel.org/stable/c/0a7591e14a8da794d0b93b5d1c6254ccb23adacb\"}, {\"url\": \"https://git.kernel.org/stable/c/0f7352557a35ab7888bc7831411ec8a3cbe20d78\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\"}], \"x_generator\": {\"engine\": \"bippy-a5840b7849dd\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach\\n\\nThis is the candidate patch of CVE-2023-47233 :\\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-47233\\n\\nIn brcm80211 driver,it starts with the following invoking chain\\nto start init a timeout worker:\\n\\n-\u003ebrcmf_usb_probe\\n  -\u003ebrcmf_usb_probe_cb\\n    -\u003ebrcmf_attach\\n      -\u003ebrcmf_bus_started\\n        -\u003ebrcmf_cfg80211_attach\\n          -\u003ewl_init_priv\\n            -\u003ebrcmf_init_escan\\n              -\u003eINIT_WORK(\u0026cfg-\u003eescan_timeout_work,\\n\\t\\t  brcmf_cfg80211_escan_timeout_worker);\\n\\nIf we disconnect the USB by hotplug, it will call\\nbrcmf_usb_disconnect to make cleanup. The invoking chain is :\\n\\nbrcmf_usb_disconnect\\n  -\u003ebrcmf_usb_disconnect_cb\\n    -\u003ebrcmf_detach\\n      -\u003ebrcmf_cfg80211_detach\\n        -\u003ekfree(cfg);\\n\\nWhile the timeout woker may still be running. This will cause\\na use-after-free bug on cfg in brcmf_cfg80211_escan_timeout_worker.\\n\\nFix it by deleting the timer and canceling the worker in\\nbrcmf_cfg80211_detach.\\n\\n[arend.vanspriel@broadcom.com: keep timer delete as is and cancel work just before free]\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-05-29T05:29:25.242Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-35811\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-09-11T17:32:51.552Z\", \"dateReserved\": \"2024-05-17T12:19:12.342Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-17T13:23:17.508Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.


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