Bug 2134506 (CVE-2022-42721) - CVE-2022-42721 kernel: BSS list corruption in cfg80211_add_nontrans_list in net/wireless/scan.c
Summary: CVE-2022-42721 kernel: BSS list corruption in cfg80211_add_nontrans_list in n...
Keywords:
Status: NEW
Alias: CVE-2022-42721
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2134509 2134510 2134511 2134512 2134507
Blocks: 2133534
TreeView+ depends on / blocked
 
Reported: 2022-10-13 13:47 UTC by Rohit Keshri
Modified: 2022-12-31 23:35 UTC (History)
52 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A list corruption flaw was found in cfg80211_add_nontrans_list in the net/wireless/scan.c function in the Linux kernel. This flaw could lead to a denial of service.
Clone Of:
Environment:
Last Closed:

Attachments (Terms of Use)

Description Rohit Keshri 2022-10-13 13:47:30 UTC 
If a non-transmitted BSS shares enough information (both SSID and BSSID!) with another non-transmitted BSS of a different AP, then we can find and update it, and then try to add it to the non-transmitted BSS list. We do a search for it on the transmitted BSS, but if it's not there (but belongs to another transmitted BSS), the list gets corrupted.

Refer: 
https://www.openwall.com/lists/oss-security/2022/10/13/2
Comment 2 Rohit Keshri 2022-10-13 13:52:46 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2134507]
Note You need to log in before you can comment on or make changes to this bug.