CVE-2026-89640

CVE-2026-89640 is an integer underflow in the Linux kernel's CIFS filesystem driver, specifically in cifs_remap_file_range() when performing a remap with len == 0 (clone to EOF). If the offset exceeds the source file size, the computed length becomes a negative loff_t , corrupting the ByteCount i...

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 Linux kernel that stems from a logic error when merging too long ranges, which could lead to file range corruption...

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 improper handling of an overflow in the iommufd subsystem for the ALIGN function during iova allocation, whi...