CVE-2026-68439 wifi: mt76: mt7925: fix possible NULL-pointer deref in mt7925_mcu_bss_he_tlv()
A NULL pointer dereference in the mt7925 WiFi driver can cause a kernel crash, leading to denial of service for local or adjacent attackers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-68439?
CVE-2026-68439 is a vulnerability in Linux, published on 12 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7925: fix possible NULL-pointer deref in mt7925_mcu_bss_he_tlv()
mt76_connac_get_he_phy_cap routine can theoretically return NULL so check cap pointer before dereferencing it.
Which versions are affected by CVE-2026-68439?
How do I fix CVE-2026-68439?
Apply the vendor's patch.
Is CVE-2026-68439 being exploited?
There is no known exploitation of CVE-2026-68439 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68439, DEBIAN-CVE-2026-68439, GHSA-wfqw-w2wc-4gmv, UBUNTU-CVE-2026-68439.