CVE-2025-37927

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid<br /> <br /> There is a string parsing logic error which can lead to an overflow of hid<br /> or uid buffers. Comparing ACPIID_LEN against a total string length doesn&amp;#39;t<br /> take into account the lengths of individual hid and uid buffers so the<br /> check is insufficient in some cases. For example if the length of hid<br /> string is 4 and the length of the uid string is 260, the length of str<br /> will be equal to ACPIID_LEN + 1 but uid string will overflow uid buffer<br /> which size is 256.<br /> <br /> The same applies to the hid string with length 13 and uid string with<br /> length 250.<br /> <br /> Check the length of hid and uid strings separately to prevent<br /> buffer overflow.<br /> <br /> Found by Linux Verification Center (linuxtesting.org) with SVACE.