CVE-2026-98182
wifi: mac80211: refuse to make a monitor active when it has no queue
No known exploitation. EPSS puts it in the 7th percentile. Fixed versions are out.
What to do
Find your product and version, then upgrade to the build on the right.
- LinuxAffected: ≥ 79af1f866193de29e65a4dba7d0dab14b0c0ff93, < b7b7d46ec4fa127767931938b282c361c0519af6Upgrade to: b7b7d46ec4fa127767931938b282c361c0519af6Affected: ≥ 79af1f866193de29e65a4dba7d0dab14b0c0ff93, < abe15e643e576459469867758ae9c586a7bab95dUpgrade to: abe15e643e576459469867758ae9c586a7bab95dAffected: ≥ 79af1f866193de29e65a4dba7d0dab14b0c0ff93, < 46c223468537a05a404699771cd3e68532dab5e6Upgrade to: 46c223468537a05a404699771cd3e68532dab5e6Affected: ≥ 79af1f866193de29e65a4dba7d0dab14b0c0ff93, < 2b04d6556964ae9f89819b86a0a7801e39c3aae5Upgrade to: 2b04d6556964ae9f89819b86a0a7801e39c3aae5Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: refuse to make a monitor active when it has no queue A monitor interface only gets a TXQ if it's created active, and one can't be added later. Setting the flag on a down interface is still allowed, so the driver is handed a monitor with no queue. ath9k dereferences it: BUG: kernel NULL pointer dereference, address: 0000000000000066 RIP: 0010:ath_tx_node_init+0x49/0x170 [ath9k] ath9k_add_interface+0x10c/0x140 [ath9k] drv_add_interface+0x54/0x250 [mac80211] ieee80211_do_open+0x32f/0x800 [mac80211] Reached with CAP_NET_ADMIN by "iw dev X set monitor active" followed by "ip link set X up". RTNL is held, so netlink operations block behind it. Refuse the flag when there is no queue to give.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 7th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
2 events over 0 days, from the signal feeds we watch.
- Publishedrecord updated
Affected products
Sources
References in the record
- git.kernel.org/stable/c/2b04d6556964ae9f89819b86a0a7801e39c3aae5
- git.kernel.org/stable/c/46c223468537a05a404699771cd3e68532dab5e6
- git.kernel.org/stable/c/abe15e643e576459469867758ae9c586a7bab95d
And 1 more reference. See all after sign-in
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