Bug 2282592 (CVE-2021-47225) - CVE-2021-47225 kernel: mac80211: fix deadlock in AP/VLAN handling
Summary: CVE-2021-47225 kernel: mac80211: fix deadlock in AP/VLAN handling
Keywords:
Status: NEW
Alias: CVE-2021-47225
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2282975
TreeView+ depends on / blocked
 
Reported: 2024-05-22 15:44 UTC by ybuenos
Modified: 2024-10-18 14:54 UTC (History)
50 users (show)

Fixed In Version: kernel 5.12.13, kernel 5.13
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel's mac80211 module, where closing an active AP interface while its associated AP_VLAN interfaces are still up can lead to a deadlock. This situation occurs because the system tries to lock a resource that is already held, causing the operation to freeze.
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Last Closed:
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Description ybuenos 2024-05-22 15:44:52 UTC 
In the Linux kernel, the following vulnerability has been resolved:

mac80211: fix deadlock in AP/VLAN handling

The Linux kernel CVE team has assigned CVE-2021-47225 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052137-CVE-2021-47225-550b@gregkh/T
Comment 3 Alex 2024-06-09 15:38:57 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47225 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags REMOTE DEADLOCK SIMPLEFIX  ; these flags parsed automatically based on patche data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.
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