Latent heap over-read via mismatched package bounds
Published Sep 11, 2026 · Updated Sep 11, 2026
Incorrect bounds handling in Linux hp-bioscfg before 6.12.109, before 6.18.50, or before 7.2.4 uses a name length as an ACPI element count. The five hp_populate_*_package_data wrappers pass elements[0].string.length instead of the validated obj->package.count to their package parsers. Current full-package validation prevents an over-read; the defect reaches beyond elements[] only when shorter ACPI packages are accepted.
Summary
What happened
Incorrect bounds handling in Linux hp-bioscfg before 6.12.109, before 6.18.50, or before 7.2.4 uses a name length as an ACPI element count. The five hp_populate_*_package_data wrappers pass elements[0].string.length instead of the validated obj->package.count to their package parsers. Current full-package validation prevents an over-read; the defect reaches beyond elements[] only when shorter ACPI packages are accepted.
The record
- CVE
- CVE-2026-81011
- Published
- Sep 11, 2026
- Updated
- Sep 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 11, 2026CVE publishedPublication date reported by the CVE source.
- Sep 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <6.12.109
- Affected versionversion=0 <6.18.50
- Affected versionversion=0 <7.2.4
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <400cbc3ccc88a5ad37cd85056224635ce9eba018
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <436017808c7cbcdb5e49b2142090d4391e3de9a6
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a38127df99ae8b1851560b35b837c9952416143a
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e0ddfd77c0c320b7d12b6c9169303b140b798775
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
No sourced classifications are available.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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