CVE-2026-68325

Summary

In the Linux kernel, the following vulnerability has been resolved:

iommu/amd: Bound the early ACPI HID map

The ivrs_acpihid command-line parser appends entries to a fixed four-element early_acpihid_map array. Unlike the sibling IOAPIC and HPET parsers, it does not reject a fifth entry before incrementing the map size.

Check the capacity at the common found label before parsing the HID and UID or writing the entry.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxca3bf5d47cec8b7614bcb2e9132c40081d6d81db < 1e31d2394e0db69541b1591d46c5ad6431c81db3affected
LinuxLinuxca3bf5d47cec8b7614bcb2e9132c40081d6d81db < abe5d7962f09adada9c4fb25b816dddd3f97c55daffected
LinuxLinuxca3bf5d47cec8b7614bcb2e9132c40081d6d81db < e5ebe8544df1a1c3611739a8622156094fe470dfaffected
LinuxLinuxca3bf5d47cec8b7614bcb2e9132c40081d6d81db < 030a8e84f8f1b6e96f469c84a13a225c3699910baffected
LinuxLinuxca3bf5d47cec8b7614bcb2e9132c40081d6d81db < fb80117fddb5b477218dc99bb53911b72c3847f8affected
LinuxLinux4.7affected
LinuxLinux0 < 4.7unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2-rc5 <= *unaffected

Weaknesses

References