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 improper initialization of the gfntopfncache lock, which could lead to a race condition...

Linux Distros Unpatched Vulnerability : CVE-2023-52489

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mm/sparsemem: fix race in accessing memorysection-usage The below race is observed on a PFN which falls into the device memory region with the system memory...

AZL-68690 CVE-2022-49562 affecting package kernel 5.15.200.1-1

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...

Azure Linux 3.0 Security Update: kernel (CVE-2024-47674)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-47674 advisory. - In the Linux kernel, the following vulnerability has been resolved: mm: avoid leaving partial pfn mappings...

SUSE CVE-2024-57945

In the Linux kernel, the following vulnerability has been resolved: riscv: mm: Fix the out of bound issue of vmemmap address In sparse vmemmap model, the virtual address of vmemmap is calculated as: struct page VMEMMAPSTART - physrambase PAGESHIFT. And the struct page's va can be calculated with ...

AZL-67845 CVE-2024-57945 affecting package kernel 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved: riscv: mm: Fix the out of bound issue of vmemmap address In sparse vmemmap model, the virtual address of vmemmap is calculated as: struct page VMEMMAPSTART - physrambase PAGESHIFT. And the struct page's va can be calculated with ...

CVE-2024-57881

In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: don't call pfntopage on possibly non-existent PFN in splitlargebuddy In splitlargebuddy, we might call pfntopage on a PFN that might not exist. In corner cases, such as when freeing the highest pageblock in the last...

CVE-2024-57881

In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: don't call pfntopage on possibly non-existent PFN in splitlargebuddy In splitlargebuddy, we might call pfntopage on a PFN that might not exist. In corner cases, such as when freeing the highest pageblock in the last...

UBUNTU-CVE-2024-57881

In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: don't call pfntopage on possibly non-existent PFN in splitlargebuddy In splitlargebuddy, we might call pfntopage on a PFN that might not exist. In corner cases, such as when freeing the highest pageblock in the last...

CVE-2024-57881 mm/page_alloc: don't call pfn_to_page() on possibly non-existent PFN in split_large_buddy()

In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: don't call pfntopage on possibly non-existent PFN in splitlargebuddy In splitlargebuddy, we might call pfntopage on a PFN that might not exist. In corner cases, such as when freeing the highest pageblock in the last...

CVE-2024-57881 mm/page_alloc: don't call pfn_to_page() on possibly non-existent PFN in split_large_buddy()

In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: don't call pfntopage on possibly non-existent PFN in splitlargebuddy In splitlargebuddy, we might call pfntopage on a PFN that might not exist. In corner cases, such as when freeing the highest pageblock in the last...

CVE-2024-57881

In the Linux kernel, the following vulnerability has been resolved: mm/pagealloc: don't call pfntopage on possibly non-existent PFN in splitlargebuddy In splitlargebuddy, we might call pfntopage on a PFN that might not exist. In corner cases, such as when freeing the highest pageblock in the last...

PT-2025-3670

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.74 Description The issue is related to the calculation of the virtual address of vmemmap in the sparse vmemmap model. The virtual address is calculated as struct page VMEMMAP START - phys ram base PAGE SHIFT,...

UBUNTU-CVE-2024-53148

In the Linux kernel, the following vulnerability has been resolved: comedi: Flush partial mappings in error case If some remappfnrange calls succeeded before one failed, we still have buffer pages mapped into the userspace page tables when we drop the buffer reference with comedibufmapputbm. The...

kernel: mm: prevent derefencing NULL ptr in pfn_section_valid()

A flaw was found in the Linux kernel. This flaw allows a local user to cause a Denial of Service DoS by crashing the system. A race condition during memory section deactivation in the memory management subsystem can lead to a null pointer dereference in the pfnsectionvalid function due to a missi...

kernel: mm: prevent derefencing NULL ptr in pfn_section_valid()

A flaw was found in the Linux kernel. This flaw allows a local user to cause a Denial of Service DoS by crashing the system. A race condition during memory section deactivation in the memory management subsystem can lead to a null pointer dereference in the pfnsectionvalid function due to a missi...

CVE-2024-47674

In the Linux kernel, the following vulnerability has been resolved: mm: avoid leaving partial pfn mappings around in error case As Jann points out, PFN mappings are special, because unlike normal memory mappings, there is no lifetime information associated with the mapping - it is just a raw...

AZL-50582 CVE-2024-47674 affecting package kernel for versions less than 5.15.173.1-1

In the Linux kernel, the following vulnerability has been resolved: mm: avoid leaving partial pfn mappings around in error case As Jann points out, PFN mappings are special, because unlike normal memory mappings, there is no lifetime information associated with the mapping - it is just a raw...

CVE-2024-47674

In the Linux kernel, the following vulnerability has been resolved: mm: avoid leaving partial pfn mappings around in error case As Jann points out, PFN mappings are special, because unlike normal memory mappings, there is no lifetime information associated with the mapping - it is just a raw...

UBUNTU-CVE-2024-47674

In the Linux kernel, the following vulnerability has been resolved: mm: avoid leaving partial pfn mappings around in error case As Jann points out, PFN mappings are special, because unlike normal memory mappings, there is no lifetime information associated with the mapping - it is just a raw...