In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: fix MBSSID parsing use-after-free
commit ff05d4b45dd89b922578dac497dcabf57cf771c6
When we parse a multi-BSSID element, we might point some
element pointers into the allocated nontransmitted_profile.
However, we free this before returning, causing UAF when the
relevant pointers in the parsed elements are accessed.
Fix this by not allocating the scratch buffer separately but
as part of the returned structure instead, that way, there
are no lifetime issues with it.
The scratch buffer introduction as part of the returned data
here is taken from MLO feature work done by Ilan.
This fixes CVE-2022-42719.
Metrics
Affected Vendors & Products
| Vendors | Products |
|---|---|
| Linux |
|
No data.
No data.
References
History
Tue, 30 Dec 2025 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix MBSSID parsing use-after-free commit ff05d4b45dd89b922578dac497dcabf57cf771c6 When we parse a multi-BSSID element, we might point some element pointers into the allocated nontransmitted_profile. However, we free this before returning, causing UAF when the relevant pointers in the parsed elements are accessed. Fix this by not allocating the scratch buffer separately but as part of the returned structure instead, that way, there are no lifetime issues with it. The scratch buffer introduction as part of the returned data here is taken from MLO feature work done by Ilan. This fixes CVE-2022-42719. | |
| Title | wifi: mac80211: fix MBSSID parsing use-after-free | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
MITRE
Status: REJECTED
Assigner: Linux
Published: 2025-12-30T12:10:52.754Z
Updated: 2025-12-30T13:52:29.775Z
Reserved: 2025-12-30T12:06:07.132Z
Link: CVE-2022-50831
Vulnrichment
No data.
NVD
Status : Received
Published: 2025-12-30T13:15:57.597
Modified: 2025-12-30T13:15:57.597
Link: CVE-2022-50831
Redhat
No data.