CVE-2022-50675

A vulnerability was found in the ARM64 Memory Tagging Extension (MTE) implementation in the Linux kernel. The PG_mte_tagged bit was being incorrectly set on pages that should not have MTE tags, causing conflicts with KASAN hardware tag checking. When pages are migrated, incorrect tags could be copied, leading to KASAN reporting invalid memory access due to tag mismatches between pointer and memory tags.

This vulnerability affects ARM64 systems with Memory Tagging Extension (MTE) support, specifically when running with CONFIG_KASAN_HW_TAGS enabled. The issue can cause KASAN false positives and potential memory access faults but is limited to ARM64 architecture with specific hardware features.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.