CVE-2026-74505 ALSA: 6fire: Fix UAF at error handling during probe
A use-after-free vulnerability in the ALSA 6fire driver allows local attackers to execute code or escalate privileges via physical device interaction.
- 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-2026-74505?
CVE-2026-74505 is an use after free vulnerability in Linux, published on 15 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:
ALSA: 6fire: Fix UAF at error handling during probe
Although 6fire driver had a few fixes for dealing with the early error handling during the probe phase, it forgot a pending URB before freeing the resources, which may lead to a UAF.
This patch addresses it by doing the almost same cleanup procedure like the normal disconnect phase at the error path.
Which versions are affected by CVE-2026-74505?
How do I fix CVE-2026-74505?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-74505 being exploited?
There is no known exploitation of CVE-2026-74505 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-74505, DEBIAN-CVE-2026-74505, GHSA-3wq3-vrpr-9c55, UBUNTU-CVE-2026-74505.