CVE-2026-81011 Linux kernel - Out-of-Bounds Read

Linux kernel platform/x86 hp-bioscfg contains an out-of-bounds read caused by forwarding incorrect element count to package parsers, letting attackers potentially cause heap read beyond array bounds, exploit requires crafted ACPI package data.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.12% 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:L/UI:N/S:U/C:H/I:N/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing 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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