CVE-2026-31398 mm/rmap: fix incorrect pte restoration for lazyfree folios

In the Linux kernel, the following vulnerability has been resolved: mm/rmap: fix incorrect pte restoration for lazyfree folios We batch unmap anonymous lazyfree folios by foliounmapptebatch. If the batch has a mix of writable and non-writable bits, we may end up setting the entire batch writable...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the improper restoration of writable and soft dirty bits during batch processing, potentially...

KVM: x86: Use __try_cmpxchg_user() to update guest PTE A/D bits

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CVE-2023-53081

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix data corruption after failed write When buffered write fails to copy data into underlying page cache page, ocfs2writeendnolock just zeroes out and dirties the page. This can leave dirty page beyond EOF and if page...

DEBIAN-CVE-2022-49562

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use trycmpxchguser to update guest PTE A/D bits Use the recently introduced trycmpxchguser to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VMPFNMAP path is broken as it assumes tha...

UBUNTU-CVE-2022-49562

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Use trycmpxchguser to update guest PTE A/D bits Use the recently introduced trycmpxchguser to update guest PTE A/D bits instead of mapping the PTE into kernel address space. The VMPFNMAP path is broken as it assumes tha...

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 not properly updating the A/D bits of the guest PTE, which could result in accessing the wrong PFN...

SUSE CVE-2024-36943

In the Linux kernel, the following vulnerability has been resolved: fs/proc/taskmmu: fix loss of young/dirty bits during pagemap scan makeuffdwppte was previously doing: pte = ptepgetptep; ptepmodifyprotstartptep; pte = ptemkuffdwppte; ptepmodifyprotcommitptep, pte; But if another thread accessed...

CVE-2024-36943

In the Linux kernel, the following vulnerability has been resolved: fs/proc/taskmmu: fix loss of young/dirty bits during pagemap scan makeuffdwppte was previously doing: pte = ptepgetptep; ptepmodifyprotstartptep; pte = ptemkuffdwppte; ptepmodifyprotcommitptep, pte; But if another thread accessed...

DEBIAN-CVE-2024-36943

In the Linux kernel, the following vulnerability has been resolved: fs/proc/taskmmu: fix loss of young/dirty bits during pagemap scan makeuffdwppte was previously doing: pte = ptepgetptep; ptepmodifyprotstartptep; pte = ptemkuffdwppte; ptepmodifyprotcommitptep, pte; But if another thread accessed...

CVE-2024-36943 fs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan

In the Linux kernel, the following vulnerability has been resolved: fs/proc/taskmmu: fix loss of young/dirty bits during pagemap scan makeuffdwppte was previously doing: pte = ptepgetptep; ptepmodifyprotstartptep; pte = ptemkuffdwppte; ptepmodifyprotcommitptep, pte; But if another thread accessed...

CVE-2024-36943 fs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan

In the Linux kernel, the following vulnerability has been resolved: fs/proc/taskmmu: fix loss of young/dirty bits during pagemap scan makeuffdwppte was previously doing: pte = ptepgetptep; ptepmodifyprotstartptep; pte = ptemkuffdwppte; ptepmodifyprotcommitptep, pte; But if another thread accessed...

CVE-2024-36943 fs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan

In the Linux kernel, the following vulnerability has been resolved: fs/proc/taskmmu: fix loss of young/dirty bits during pagemap scan makeuffdwppte was previously doing: pte = ptepgetptep; ptepmodifyprotstartptep; pte = ptemkuffdwppte; ptepmodifyprotcommitptep, pte; But if another thread accessed...

Linux kernel security vulnerabilities

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 an issue with missing young/dirty bits during a repair page map scan...

GSD-2022-1005860 KVM: Don't set Accessed/Dirty bits for ZERO_PAGE

KVM: Don't set Accessed/Dirty bits for ZEROPAGE This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.137 by commit...

GSD-2022-1005605 KVM: Don't set Accessed/Dirty bits for ZERO_PAGE

KVM: Don't set Accessed/Dirty bits for ZEROPAGE This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.61 by commit...

PT-2022-33863 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.15.61 Description: The issue concerns the KVM and the handling of Accessed/Dirty bits for the ZERO PAGE. The actual impact and potential for attack have not been proven yet. Recommendations: For versions prio...

PT-2022-34118 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.10.137 Description: The issue concerns the KVM and the handling of Accessed/Dirty bits for ZERO PAGE. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kernel...