5.5
MEDIUM
CVE-2024-49937
Linux Kernel cfg80211: Null Pointer Dereference
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]

INFO

Published Date :

Oct. 21, 2024, 6:15 p.m.

Last Modified :

Nov. 13, 2024, 5:02 p.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2024-49937 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-49937.

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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-49937 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-49937 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Nov. 13, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70 No Types Assigned https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70 Patch
    Changed Reference Type https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651 No Types Assigned https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651 Patch
    Changed Reference Type https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3 No Types Assigned https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3 Patch
    Changed Reference Type https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1 No Types Assigned https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1 Patch
    Changed Reference Type https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f No Types Assigned https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f Patch
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.1.113 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.55 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.11 up to (excluding) 6.11.3
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Oct. 21, 2024

    Action Type Old Value New Value
    Added 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]
    Added Reference kernel.org https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651 [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-49937 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-49937 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
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