CVE-2026-90268 scsi: sd: Fix error handling in sd_probe() after large pool creation failure
A memory corruption vulnerability in the Linux kernel SCSI disk driver allows local attackers to cause a denial of service via improper error handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-90268?
CVE-2026-90268 is a high-severity memory corruption vulnerability in Linux, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
scsi: sd: Fix error handling in sd_probe() after large pool creation failure
After device_add(&sdkp->disk_dev) succeeds, sd_large_pool_create() failure must unregister disk_dev and let scsi_disk_release() free sdkp. Going through out_free_index kfree()s an already registered device and leaks the sysfs entry.
Which versions are affected by CVE-2026-90268?
How do I fix CVE-2026-90268?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-90268 being exploited?
There is no known exploitation of CVE-2026-90268 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-90268, GHSA-2gpx-r754-7j65, UBUNTU-CVE-2026-90268.