CVE-2024-49937

MEDIUM EPSS 14.1%
Published Oct 21, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 21, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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]

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
14.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel* <6.1.113
linuxlinux_kernel*≥6.2  –  <6.6.55
linuxlinux_kernel*≥6.7  –  <6.10.14
linuxlinux_kernel*≥6.11  –  <6.11.3

References 6

  • git.kernel.org https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f
    Patch