CVE-2026-89584 Linux Kernel - Misconfiguration

Linux kernel contains a validation bypass caused by improper checking of user space vectors alignment in bio-based and stacking block drivers, letting attackers cause errors or crashes, exploit requires crafted bio vectors.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Misconfiguration
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with the fix.

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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