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CVE-2026-80593

HIGHCVSS 8.4/10EPSS 0.18%

Last modified

CVE-2026-80593 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: hwmon: (asus_atk0110) Check package count before accessing element atk_ec_present() walks the management group package returned by the GGRP ACPI method and, for each sub-package, reads its first element: id = &obj->package.elements[0]; if (id->type != ACPI_TYPE_INTEGER) without checking that the sub-package is non-empty. ACPICA allocates the element array with exactly package.count entries, so for a sub-package with a zero count this reads past the allocation. The sibling function atk_debugfs_ggrp_open() performs the same access but skips empty packages with a package.count check first. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: hwmon: (asus_atk0110) Check package count before accessing element atk_ec_present() walks the management group package returned by the GGRP ACPI method and, for each sub-package, reads its first element: id = &obj->package.elements[0]; if (id->type != ACPI_TYPE_INTEGER) without checking that the sub-package is non-empty. ACPICA allocates the element array with exactly package.count entries, so for a sub-package with a zero count this reads past the allocation. The sibling function atk_debugfs_ggrp_open() performs the same access but skips empty packages with a package.count check first. Add the same check to atk_ec_present() so a malformed firmware package cannot trigger an out-of-bounds read.

Metrics

CVSS 3.1
8.4/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.18%

7.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 9e6eba610c2eb68b05841a15ece1cf929c44aea3, < 2a137124664aad1e36d8d74e8e2207365a04737f; >= 9e6eba610c2eb68b05841a15ece1cf929c44aea3, < 459b0a0439ea65b2b612aa572eb62a2e26d05618; >= 9e6eba610c2eb68b05841a15ece1cf929c44aea3, < 768f20e7bb48d723b82cb142120263d0806fbeb8; >= 9e6eba610c2eb68b05841a15ece1cf929c44aea3, < 76392d35c8df471b288cfc6536bd092b3c8ee2cf; >= 9e6eba610c2eb68b05841a15ece1cf929c44aea3, < 981a8a2e3773dc7e704943388a1fb97970b23275; >= 9e6eba610c2eb68b05841a15ece1cf929c44aea3, < d8d4fa0c4f818e30b6f6737bdd989b7e2b511cae; >= 9e6eba610c2eb68b05841a15ece1cf929c44aea3, < b770fcfcdced569bcf7c6982aeea8c3d11a21c2b; >= 9e6eba610c2eb68b05841a15ece1cf929c44aea3, < e2735b39f044bad7bf2017aef248935525bc0b97
LinuxLinux2.6.32

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80593?
In the Linux kernel, the following vulnerability has been resolved: hwmon: (asus_atk0110) Check package count before accessing element atk_ec_present() walks the management group package returned by the GGRP ACPI method and, for each sub-package, reads its first element: id = &obj->package.elements[0]; if (id->type != ACPI_TYPE_INTEGER) without checking that the sub-package is non-empty. ACPICA allocates the element array with exactly package.count entries, so for a sub-package with a zero count this reads past the allocation. The sibling function atk_debugfs_ggrp_open() performs the same access but skips empty packages with a package.count check first. Add the same check to atk_ec_present() so a malformed firmware package cannot trigger an out-of-bounds read.
How severe is CVE-2026-80593?
CVE-2026-80593 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-80593?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST