CVE-2021-47091
mac80211: fix locking in ieee80211_start_ap error path
Description
In the Linux kernel, the following vulnerability has been resolved: mac80211: fix locking in ieee80211_start_ap error path We need to hold the local->mtx to release the channel context, as even encoded by the lockdep_assert_held() there. Fix it.
INFO
Published Date :
March 4, 2024, 6:15 p.m.
Last Modified :
Feb. 3, 2025, 1:42 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel packages.
- Reboot the system after the update.
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-2021-47091.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47091 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-2021-47091
weaknesses.
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-2021-47091 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47091 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]
Feb. 03, 2025
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 Added CWE NIST CWE-667 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.89 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.12 *cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/87a270625a89fc841f1a7e21aae6176543d8385c No Types Assigned https://git.kernel.org/stable/c/87a270625a89fc841f1a7e21aae6176543d8385c Patch Changed Reference Type https://git.kernel.org/stable/c/87a270625a89fc841f1a7e21aae6176543d8385c No Types Assigned https://git.kernel.org/stable/c/87a270625a89fc841f1a7e21aae6176543d8385c Patch Changed Reference Type https://git.kernel.org/stable/c/ac61b9c6c0549aaeb98194cf429d93c41bfe5f79 No Types Assigned https://git.kernel.org/stable/c/ac61b9c6c0549aaeb98194cf429d93c41bfe5f79 Patch Changed Reference Type https://git.kernel.org/stable/c/ac61b9c6c0549aaeb98194cf429d93c41bfe5f79 No Types Assigned https://git.kernel.org/stable/c/ac61b9c6c0549aaeb98194cf429d93c41bfe5f79 Patch Changed Reference Type https://git.kernel.org/stable/c/c1d1ec4db5f7264cfc21993e59e8f2dcecf4b44f No Types Assigned https://git.kernel.org/stable/c/c1d1ec4db5f7264cfc21993e59e8f2dcecf4b44f Patch Changed Reference Type https://git.kernel.org/stable/c/c1d1ec4db5f7264cfc21993e59e8f2dcecf4b44f No Types Assigned https://git.kernel.org/stable/c/c1d1ec4db5f7264cfc21993e59e8f2dcecf4b44f Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/87a270625a89fc841f1a7e21aae6176543d8385c Added Reference https://git.kernel.org/stable/c/ac61b9c6c0549aaeb98194cf429d93c41bfe5f79 Added Reference https://git.kernel.org/stable/c/c1d1ec4db5f7264cfc21993e59e8f2dcecf4b44f -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 04, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: mac80211: fix locking in ieee80211_start_ap error path We need to hold the local->mtx to release the channel context, as even encoded by the lockdep_assert_held() there. Fix it. Added Reference Linux https://git.kernel.org/stable/c/ac61b9c6c0549aaeb98194cf429d93c41bfe5f79 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/c1d1ec4db5f7264cfc21993e59e8f2dcecf4b44f [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/87a270625a89fc841f1a7e21aae6176543d8385c [No types assigned]