CVE-2026-98140

The Linux kernel contains a vulnerability in the ntfs module where the write_mft_record_nolock() function fails to unmap a folio on specific error paths (pre_write_mst_fixup() and bio_add_folio()). This results in a kmap_local leak . Because these mappings are stack-ordered per task, leaking a ma...

CVE-2026-98140 ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmaplocal leak in writemftrecordnolock error paths writemftrecordnolock maps the MFT record folio with kmaplocalfolio, but the prewritemstfixup and bioaddfolio failure paths jump to the error label without unmapping it...

EUVD-2026-86971

In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmaplocal leak in writemftrecordnolock error paths writemftrecordnolock maps the MFT record folio with kmaplocalfolio, but the prewritemstfixup and bioaddfolio failure paths jump to the error label without unmapping it...

CVE-2026-98140

In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmaplocal leak in writemftrecordnolock error paths writemftrecordnolock maps the MFT record folio with kmaplocalfolio, but the prewritemstfixup and bioaddfolio failure paths jump to the error label without unmapping it...

CVE-2026-98140

In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmaplocal leak in writemftrecordnolock error paths writemftrecordnolock maps the MFT record folio with kmaplocalfolio, but the prewritemstfixup and bioaddfolio failure paths jump to the error label without unmapping it...

CVE-2025-39899: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mm/userfaultfd: fix kmaplocal LIFO ordering for CONFIGHIGHPTE With CONFIGHIGHPTE on 32-bit ARM, movepagespte maps PTE pages using kmaplocalpage, which requires unmapping in Last-In-First-Out order. The current code maps dstpte...

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 kmaplocal not following last-in-first-out order, which could lead to a null pointer dereference...

CVE-2021-46910

A flaw was found in kmaplocal in the Linux Kernel that doubles the number of per-CPU fixmap slots allocated for kmaplocal. This causes the fixmap region to grow downwards beyond the start of its reserved window if the supported number of CPUs is large, eventually colliding with the newly added...

CVE-2021-46910

CVE-2021-46910 affects the Linux kernel ARM MM fixing path in kmap_local: when CONFIG_DEBUG_KMAP_LOCAL is enabled, per-CPU fixmap slots can grow and collide with the virtual DT mapping, potentially triggering an OOPS on systems with many CPUs. The disclosed remediation in the provided materials i...

CVE-2021-46910 ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUG_KMAP_LOCAL is enabled

In the Linux kernel, the following vulnerability has been resolved: ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUGKMAPLOCAL is enabled The debugging code for kmaplocal doubles the number of per-CPU fixmap slots allocated for kmaplocal, in order to use half of them as guard regions. This...

CVE-2021-46910: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUGKMAPLOCAL is enabled The debugging code for kmaplocal doubles the number of per-CPU fixmap slots allocated for kmaplocal, in order to use half of them as guard regions. This...