CVE-2026-98335wifi: mac80211: abort chanswitch when leaving a mesh
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b8456a14e9d2770846fcf74de18ff95b676149a3 before bc544ef02327edf61c94d2b6bae9d14b217009b2; from b8456a14e9d2770846fcf74de18ff95b676149a3 before 2e1d6e80148495e728a85a9250176f266312e55c; from b8456a14e9d2770846fcf74de18ff95b676149a3 before d222fdc973bb8dbf0357772bd9042ffdc8291939; from b8456a14e9d2770846fcf74de18ff95b676149a3 before ac7472a24bd433b81c06582835dd1d5547c10da9 | CNA record |
References
- https://git.kernel.org/stable/c/bc544ef02327edf61c94d2b6bae9d14b217009b2
- https://git.kernel.org/stable/c/2e1d6e80148495e728a85a9250176f266312e55c
- https://git.kernel.org/stable/c/d222fdc973bb8dbf0357772bd9042ffdc8291939
- https://git.kernel.org/stable/c/ac7472a24bd433b81c06582835dd1d5547c10da9
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.