CVE-2026-31619 ALSA: fireworks: bound device-supplied status before string array lookup
A missing bounds check in the Linux kernel ALSA Fireworks driver allows out-of-bounds memory reads via crafted device responses, potentially disclosing sensitive kernel memory.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-31619?
CVE-2026-31619 is a medium-severity vulnerability in Linux kernel, published on 24 Apr 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: fireworks: bound device-supplied status before string array lookup
The status field in an EFW response is a 32-bit value supplied by the firewire device. efr_status_names[] has 17 entries so a status value outside that range goes off into the weeds when looking at the %s value.
Even worse, the status could return EFR_STATUS_INCOMPLETE which is 0x80000000, and is obviously not in that array of potential strings.
Fix this up by properly bounding the index against the array size and printing "unknown" if it's not recognized.
Which versions are affected by CVE-2026-31619?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-31619?
Apply the vendor's patch.
Is CVE-2026-31619 being exploited?
There is no known exploitation of CVE-2026-31619 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-83936, BELL-CVE-2026-31619, DEBIAN-CVE-2026-31619, GHSA-c947-xgxx-fj67, ROOT-OS-DEBIAN-11-CVE-2026-31619, ROOT-OS-DEBIAN-12-CVE-2026-31619 and 4 more.