CVE-2025-40353

CVE-2025-40353 concerns the Linux kernel on ARM64. The issue is in copy_highpage() for MTE-tagged pages: the function assumed a newly allocated destination page is not MTE-tagged, but due to a migration flow, a second copy can occur to the same destination after __folio_migrate_mapping() fails, t...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from the improper handling of tagged pages in copyhighpage, which may result in a warning message...

CVE-2025-40353: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: arm64: mte: Do not warn if the page is already tagged in copyhighpage The arm64 copyhighpage assumes that the destination page is newly allocated and not MTE-tagged PGmtetagged unset and warns accordingly. However, following comm...