Executive Summary



This vulnerability is currently undergoing analysis and not all information is available. Please check back soon to view the completed vulnerability summary
Informations
Name CVE-2022-49942 First vendor Publication 2025-06-18
Vendor Cve Last vendor Modification 2025-06-18

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected

When we are not connected to a channel, sending channel "switch" announcement doesn't make any sense.

The BSS list is empty in that case. This causes the for loop in cfg80211_get_bss() to be bypassed, so the function returns NULL (check line 1424 of net/wireless/scan.c), causing the WARN_ON() in ieee80211_ibss_csa_beacon() to get triggered (check line 500 of net/mac80211/ibss.c), which was consequently reported on the syzkaller dashboard.

Thus, check if we have an existing connection before generating the CSA beacon in ieee80211_ibss_finish_csa().

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-49942

Sources (Detail)

https://git.kernel.org/stable/c/15bc8966b6d3a5b9bfe4c9facfa02f2b69b1e5f0
https://git.kernel.org/stable/c/1691a48aef0a82d1754b9853dae7e3f5cacdf70b
https://git.kernel.org/stable/c/552ba102a6898630a7d16887f29e606d6fabe508
https://git.kernel.org/stable/c/66689c5c02acd4d76c28498fe220998610aec61e
https://git.kernel.org/stable/c/864e280cb3a9a0f5212b16ef5057c4e692f7039d
https://git.kernel.org/stable/c/cdb9a8da9b84800eb15506cd9363cf0cf059e677
https://git.kernel.org/stable/c/d9eb37db6a28b59a95a3461450ee209654c5f95b
https://git.kernel.org/stable/c/dd649b49219a0388cc10fc40e4c2ea681566a780
Source Url

Alert History

If you want to see full details history, please login or register.
0
Date Informations
2025-06-18 17:20:35
  • First insertion