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fkie_cve-2026-98327

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: mesh: reset the CSA state when leaving

ifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed in ieee80211_mesh_finish_csa(), i.e. when the channel switch completes. Leaving the mesh while a switch is still pending therefore leaks it.

Additionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak in this case, so things can get mixed up in addition to the memory leak.

Refactor the reset and call it in ieee80211_stop_mesh() to fix it all.

GHSA-6v32-hcc5-q9w8

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: mesh: reset the CSA state when leaving

Additionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak in this case, so things can get mixed up in addition to the memory leak.

Refactor the reset and call it in ieee80211_stop_mesh() to fix it all.

msrc_CVE-2026-98327 — wifi: mac80211: mesh: reset the CSA state when leaving

msrc_CVE-2026-98327

openSUSE-SU-2026:12131-1 — kernel-devel-7.2.10-1.1 on GA media

kernel-devel-7.2.10-1.1 on GA media

UBUNTU-CVE-2026-98327

Affected: Ubuntu:Pro:14.04:LTS: linux, Ubuntu:Pro:14.04:LTS: linux-aws, Ubuntu:Pro:14.04:LTS: linux-azure, Ubuntu:Pro:14.04:LTS: linux-lts-xenial, Ubuntu:Pro:16.04:LTS: linux, Ubuntu:Pro:16.04:LTS: linux-aws, Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-azure, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe and 248 more

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: reset the CSA state when leaving ifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed in ieee80211_mesh_finish_csa(), i.e. when the channel switch completes. Leaving the mesh while a switch is still pending therefore leaks it. Additionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak in this case, so things can get mixed up in addition to the memory leak. Refactor the reset and call it in ieee80211_stop_mesh() to fix it all.