CVE-2025-38451

CVE-2025-38451 affects the Linux kernel’s md/md-bitmap code. The issue caused a GPF in bitmap_get_stats() when handling external or internal bitmaps due to missing super-block validation. The fix adds a super-block existence check for both internal and external cases, preventing the non-canonical...

CVE-2021-47649

In the Linux kernel, the following vulnerability has been resolved: udmabuf: validate ubuf-pagecount Syzbot has reported GPF in sgallocappendtablefrompages. The problem was in ubuf-pages == ZEROPTR. ubuf-pagecount is calculated from arguments passed from user-space. If user creates udmabuf with...

CVE-2021-47340

A vulnerability was found in the Linux kernel's JFS, where the diFree function could access an invalid pointer. This occurs if a certain inode structure has a null pointer, potentially leading to system crashes or unexpected behavior when the kernel tries to manage file system metadata. Mitigatio...