CVE-2026-72131 nvme-apple: Prevent shared tags across queues on Apple A11
A flaw in the Apple A11 NVMe driver allows firmware crashes via duplicate tags, causing denial of service for local 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-2026-72131?
CVE-2026-72131 is a denial of service 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:
nvme-apple: Prevent shared tags across queues on Apple A11
On Apple A11, tags of pending commands must be unique across the admin and IO queues, else the firmware crashes with "duplicate tag error for tag N", with N being the tag.
Apply the existing workaround for M1 of reserving two tags for the admin queue to A11.
Which versions are affected by CVE-2026-72131?
How do I fix CVE-2026-72131?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-72131 being exploited?
There is no known exploitation of CVE-2026-72131 in the wild and no public exploit code.
Sources
Also known as AZL-105957, BELL-CVE-2026-72131, DEBIAN-CVE-2026-72131, GHSA-ccmv-h994-rmq2, UBUNTU-CVE-2026-72131.