{"id":"CVE-2026-93804","published":"2026-09-24T17:17:13.350","lastModified":"2026-09-25T13:17:21.260","description":"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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/20a3fb5e1a95caa34896853ca17a50d21c754969","tags":[]},{"url":"https://git.kernel.org/stable/c/b3451e6971248250312ad32dd7f63cc9f0a925f5","tags":[]},{"url":"https://git.kernel.org/stable/c/d0e69d9afa59b93c30294eba89b1f15f69e91105","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}