CVE-2026-89974 Linux Kernel nvme-fc - Use After Free

Linux kernel nvme-fc contains a double free vulnerability caused by improper management of fabrics options pointers in nvme_add_ctrl() error paths, letting attackers cause kernel memory corruption, exploit requires triggering nvme_add_ctrl() failure.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.29% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the Linux kernel version containing commit 1a9e218195a5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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