CVE-2026-80593

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux9e6eba610c2eb68b05841a15ece1cf929c44aea3 < 2a137124664aad1e36d8d74e8e2207365a04737faffected
LinuxLinux9e6eba610c2eb68b05841a15ece1cf929c44aea3 < 459b0a0439ea65b2b612aa572eb62a2e26d05618affected
LinuxLinux9e6eba610c2eb68b05841a15ece1cf929c44aea3 < 768f20e7bb48d723b82cb142120263d0806fbeb8affected
LinuxLinux9e6eba610c2eb68b05841a15ece1cf929c44aea3 < 76392d35c8df471b288cfc6536bd092b3c8ee2cfaffected
LinuxLinux9e6eba610c2eb68b05841a15ece1cf929c44aea3 < 981a8a2e3773dc7e704943388a1fb97970b23275affected
LinuxLinux9e6eba610c2eb68b05841a15ece1cf929c44aea3 < d8d4fa0c4f818e30b6f6737bdd989b7e2b511caeaffected
LinuxLinux9e6eba610c2eb68b05841a15ece1cf929c44aea3 < b770fcfcdced569bcf7c6982aeea8c3d11a21c2baffected
LinuxLinux9e6eba610c2eb68b05841a15ece1cf929c44aea3 < e2735b39f044bad7bf2017aef248935525bc0b97affected
LinuxLinux2.6.32affected
LinuxLinux0 < 2.6.32unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References