Vulnerability-Lookup

GHSA-64QP-9XF4-2PCH

Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2025-11-04 00:31

Details

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

wifi: cfg80211: Set correct chandef when starting CAC

When starting CAC in a mode other than AP mode, it return a "WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]" caused by the chandef.chan being null at the end of CAC.

Solution: Ensure the channel definition is set for the different modes when starting CAC to avoid getting a NULL 'chan' at the end of CAC.

Call Trace: ? show_regs.part.0+0x14/0x16 ? __warn+0x67/0xc0 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? report_bug+0xa7/0x130 ? exc_overflow+0x30/0x30 ? handle_bug+0x27/0x50 ? exc_invalid_op+0x18/0x60 ? handle_exception+0xf6/0xf6 ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211] ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211] ? process_one_work+0x165/0x280 ? worker_thread+0x120/0x3f0 ? kthread+0xc2/0xf0 ? process_one_work+0x280/0x280 ? kthread_complete_and_exit+0x20/0x20 ? ret_from_fork+0x19/0x24

[shorten subject, remove OCB, reorder cases to match previous list]

Severity ?

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2024-49937"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T18:15:15Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: Set correct chandef when starting CAC\n\nWhen starting CAC in a mode other than AP mode, it return a\n\"WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\"\ncaused by the chandef.chan being null at the end of CAC.\n\nSolution: Ensure the channel definition is set for the different modes\nwhen starting CAC to avoid getting a NULL \u0027chan\u0027 at the end of CAC.\n\n Call Trace:\n  ? show_regs.part.0+0x14/0x16\n  ? __warn+0x67/0xc0\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? report_bug+0xa7/0x130\n  ? exc_overflow+0x30/0x30\n  ? handle_bug+0x27/0x50\n  ? exc_invalid_op+0x18/0x60\n  ? handle_exception+0xf6/0xf6\n  ? exc_overflow+0x30/0x30\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? exc_overflow+0x30/0x30\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211]\n  ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211]\n  ? process_one_work+0x165/0x280\n  ? worker_thread+0x120/0x3f0\n  ? kthread+0xc2/0xf0\n  ? process_one_work+0x280/0x280\n  ? kthread_complete_and_exit+0x20/0x20\n  ? ret_from_fork+0x19/0x24\n\n[shorten subject, remove OCB, reorder cases to match previous list]",
  "id": "GHSA-64qp-9xf4-2pch",
  "modified": "2025-11-04T00:31:42Z",
  "published": "2024-10-21T18:30:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49937"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-49937 (GCVE-0-2024-49937)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-01-05 10:54

Title

wifi: cfg80211: Set correct chandef when starting CAC

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Set correct chandef when starting CAC When starting CAC in a mode other than AP mode, it return a "WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]" caused by the chandef.chan being null at the end of CAC. Solution: Ensure the channel definition is set for the different modes when starting CAC to avoid getting a NULL 'chan' at the end of CAC. Call Trace: ? show_regs.part.0+0x14/0x16 ? __warn+0x67/0xc0 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? report_bug+0xa7/0x130 ? exc_overflow+0x30/0x30 ? handle_bug+0x27/0x50 ? exc_invalid_op+0x18/0x60 ? handle_exception+0xf6/0xf6 ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211] ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211] ? process_one_work+0x165/0x280 ? worker_thread+0x120/0x3f0 ? kthread+0xc2/0xf0 ? process_one_work+0x280/0x280 ? kthread_complete_and_exit+0x20/0x20 ? ret_from_fork+0x19/0x24 [shorten subject, remove OCB, reorder cases to match previous list]

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/95f32191e50b75e0f…
	https://git.kernel.org/stable/c/04053e55dd50741cf…
	https://git.kernel.org/stable/c/f4dbfda159e43d49b…
	https://git.kernel.org/stable/c/c628026563f4ea9e0…
	https://git.kernel.org/stable/c/20361712880396e44…

Impacted products

Vendor

Product

Version

Linux

Affected: 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 , < 95f32191e50b75e0f75fae1bb925cdf51d8df0a3 (git)
Affected: 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 , < 04053e55dd50741cf6c59b9bbaa4238218c05c70 (git)
Affected: 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 , < f4dbfda159e43d49b43003cc3c2914751939035f (git)
Affected: 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 , < c628026563f4ea9e0413dd4b69429e4a1db240b1 (git)
Affected: 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 , < 20361712880396e44ce80aaeec2d93d182035651 (git)
Affected: 7a53ad13c09150076b7ddde96c2dfc5622c90b45 (git)

Linux

Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.55 , ≤ 6.6.* (semver)
Unaffected: 6.10.14 , ≤ 6.10.* (semver)
Unaffected: 6.11.3 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)

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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-64QP-9XF4-2PCH

CVE-2024-49937 (GCVE-0-2024-49937)

Tags

Sightings

Nomenclature