CVE-2026-98335 is a vulnerability in Linux Kernel
Published on October 6, 2026
wifi: mac80211: abort chanswitch when leaving a mesh
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: abort chanswitch when leaving a mesh
The code in ieee80211_stop_mesh() leaves CSA active, but leaving
the mesh released the channel context, so the CSA finalize work
crashes:
Oops: general protection fault, probably for non-canonical address
0xdffffc0000000003
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
RIP: 0010:ieee80211_put_srates_elem+0x42/0x640 net/mac80211/util.c:3272
Call Trace:
ieee80211_mesh_build_beacon+0xa83/0x1b50 net/mac80211/mesh.c:1093
ieee80211_mesh_rebuild_beacon+0xc7/0x170 net/mac80211/mesh.c:1147
ieee80211_mesh_finish_csa+0x131/0x210 net/mac80211/mesh.c:1542
ieee80211_set_after_csa_beacon net/mac80211/cfg.c:4085 [inline]
__ieee80211_csa_finalize net/mac80211/cfg.c:4133 [inline]
ieee80211_csa_finalize+0x633/0x1150 net/mac80211/cfg.c:4155
cfg80211_wiphy_work+0x2ab/0x450 net/wireless/core.c:438
Abort the channel switch properly.
Products Associated with CVE-2026-98335
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Affected Versions
Linux:- Version b8456a14e9d2770846fcf74de18ff95b676149a3 and below bc544ef02327edf61c94d2b6bae9d14b217009b2 is affected.
- Version b8456a14e9d2770846fcf74de18ff95b676149a3 and below 2e1d6e80148495e728a85a9250176f266312e55c is affected.
- Version b8456a14e9d2770846fcf74de18ff95b676149a3 and below d222fdc973bb8dbf0357772bd9042ffdc8291939 is affected.
- Version b8456a14e9d2770846fcf74de18ff95b676149a3 and below ac7472a24bd433b81c06582835dd1d5547c10da9 is affected.
- Version 3.13 is affected.
- Before 3.13 is unaffected.
- Version 6.12.112, <= 6.12.* is unaffected.
- Version 6.18.54, <= 6.18.* is unaffected.
- Version 7.2.8, <= 7.2.* is unaffected.
- Version 7.3-rc4, <= * is unaffected.