CVE-2026-72081 scsi: elx: efct: Fix I/O leak on unsupported additional CDB
A memory leak in the Linux kernel's efct SCSI driver allows attackers to cause a denial of service by sending unsupported FCP commands.
- 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-2026-72081?
CVE-2026-72081 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:
scsi: elx: efct: Fix I/O leak on unsupported additional CDB
efct_dispatch_fcp_cmd() allocates an efct_io before dispatching an unsolicited FCP command. If the command has an unsupported additional CDB, the function returns -EIO before handing the IO to the SCSI layer.
Free the allocated IO before returning from this error path.
Which versions are affected by CVE-2026-72081?
How do I fix CVE-2026-72081?
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-2026-72081 being exploited?
There is no known exploitation of CVE-2026-72081 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72081, DEBIAN-CVE-2026-72081, GHSA-993f-79rg-53g7, UBUNTU-CVE-2026-72081.