{"id":"AZL-103841","summary":"CVE-2026-93804 affecting package kernel 6.6.157.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: ibss: wait for in-flight TX on disconnect\n\nWhile leaving an IBSS in ieee80211_ibss_disconnect() mac80211 flushes\nstations, turns the carrier off and immediately tells the driver to\nleave as well. While there may be synchronize_net() in station flush\nand in this code later, packets can still be transmitted due to\ncross-CPU race conditions after carrier off is set.\nTherefore, it's possible for a race to happen where a TX to the\ndriver occurs while or after telling it to leave the IBSS. This can\nbe confusing to drivers, and in the case of iwlwifi leads to an\nattempt to use invalid queues.\n\nMove netif_carrier_off() to occur before sta_info_flush() during\nIBSS disconnect, and add synchronize_net() if flushing didn't,\nso that the synchronize_net() always happens between turning the\ncarrier off and telling the driver, avoiding this race.","modified":"2026-09-25T14:15:54.876614970Z","published":"2026-09-24T17:17:13Z","upstream":["CVE-2026-93804"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93804"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.157.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-103841.json"}}],"schema_version":"1.9.0"}