Riskcovery

CVE-2026-98326

wifi: mac80211: mesh: release the channel if start fails

State
Published
Severity
Not scored
Published
Oct 6, 2026
Updated
Oct 19, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 2b5e19677592c167d012c2d129407f39d2bdeb8d to before f0afcec2129c166e61821d6ae097061155f01b12Affected
  • 2b5e19677592c167d012c2d129407f39d2bdeb8d to before b51f5a310bd6888b90bb9546a8081215dcfe6fbeAffected
  • 2b5e19677592c167d012c2d129407f39d2bdeb8d to before 632f7acfe6dac1278a9314eaaab14fada400ddafAffected
  • 2b5e19677592c167d012c2d129407f39d2bdeb8d to before 41bee71112db53651ba9a9030de1b843255a4a7fAffected
  • 2b5e19677592c167d012c2d129407f39d2bdeb8d to before 4a4e3fa77ea36d3419d806fb5883ef425a605a5dAffected
  • 2b5e19677592c167d012c2d129407f39d2bdeb8d to before ae97fff6495a8764bc0ef281cfe5444f701e527fAffected
LinuxLinux
  • 3.9Affected
  • before 3.9Not affected
  • 6.1.189 through 6.1.*Not affected
  • 6.6.158 through 6.6.*Not affected
  • 6.12.112 through 6.12.*Not affected
  • 6.18.54 through 6.18.*Not affected
  • 7.2.8 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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