https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Thu, 01 Oct 2026 20:48:25 +0000 https://vulnerability.circl.lu/vuln/cve-2022-49942 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>wifi: mac80211: Don&#39;t finalize CSA in IBSS mode if state is disconnected</p> <p>When we are not connected to a channel, sending channel &#34;switch&#34; announcement doesn&#39;t make any sense.</p> <p>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.</p> <p>Thus, check if we have an existing connection before generating the CSA beacon in ieee80211_ibss_finish_csa().</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>wifi: mac80211: Don&#39;t finalize CSA in IBSS mode if state is disconnected</p> <p>When we are not connected to a channel, sending channel &#34;switch&#34; announcement doesn&#39;t make any sense.</p> <p>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.</p> <p>Thus, check if we have an existing connection before generating the CSA beacon in ieee80211_ibss_finish_csa().</p> https://vulnerability.circl.lu/vuln/cve-2022-49942