CVE-2026-98326
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: release the channel if start fails ieee80211_join_mesh() acquires a channel context and then calls ieee80211_start_mesh(), which can fail. In that case, the chanctx isn't released then interface removal will attempt to unassign it after it's removed from the driver, hitting: wlan0: Failed check-sdata-in-driver check, flags: 0x0 WARNING: net/mac80211/driver-ops.c:366 at drv_unassign_vif_chanctx ieee80211_assign_link_chanctx __ieee80211_link_release_channel ieee80211_link_release_channel ieee80211_teardown_sdata unregister_netdevice_many_notify _cfg80211_unregister_wdev ieee80211_remove_interfaces ieee80211_unregister_hw mac80211_hwsim_del_radio hwsim_exit_net Correctly release the channel on start failures.
How to fix
- Linux Linuxf0afcec2129c166e61821d6ae097061155f01b12, b51f5a310bd6888b90bb9546a8081215dcfe6fbe, 632f7acfe6dac1278a9314eaaab14fada400ddaf, 41bee71112db53651ba9a9030de1b843255a4a7f, 4a4e3fa77ea36d3419d806fb5883ef425a605a5d, ae97fff6495a8764bc0ef281cfe5444f701e527f or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 2b5e19677592c167d012c2d129407f39d2bdeb8d ≤ v < f0afcec2129c166e61821d6ae097061155f01b12, 2b5e19677592c167d012c2d129407f39d2bdeb8d ≤ v < b51f5a310bd6888b90bb9546a8081215dcfe6fbe, 2b5e19677592c167d012c2d129407f39d2bdeb8d ≤ v < 632f7acfe6dac1278a9314eaaab14fada400ddaf, 2b5e19677592c167d012c2d129407f39d2bdeb8d ≤ v < 41bee71112db53651ba9a9030de1b843255a4a7f, 2b5e19677592c167d012c2d129407f39d2bdeb8d ≤ v < 4a4e3fa77ea36d3419d806fb5883ef425a605a5d, 2b5e19677592c167d012c2d129407f39d2bdeb8d ≤ v < ae97fff6495a8764bc0ef281cfe5444f701e527f, 3.9 | f0afcec2129c166e61821d6ae097061155f01b12, b51f5a310bd6888b90bb9546a8081215dcfe6fbe, 632f7acfe6dac1278a9314eaaab14fada400ddaf, 41bee71112db53651ba9a9030de1b843255a4a7f, 4a4e3fa77ea36d3419d806fb5883ef425a605a5d, ae97fff6495a8764bc0ef281cfe5444f701e527f |
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