CVE-2026-90137 Linux kernel - Out of Bounds Read

Linux kernel platform/x86 hp-bioscfg contains an out-of-bounds read caused by insufficient bounds checking in password encoding parsing, letting attackers with malformed ACPI packages cause memory access violations, exploit requires crafted ACPI package.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
17 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version with the fix for hp-bioscfg password encoding bounds check.

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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