CVE-2026-63808

CVE-2026-63808 (Linux kernel exFAT): The vulnerability is a potential use-after-free in exfat_find_dir_entry() where a buffer_head is freed before all reads on the TYPE_EXTEND path, leading to a read from invalid memory. The root cause is brelse(bh) occurring before ep is no longer dereferenced; ...

CVE-2026-63808 exfat: fix potential use-after-free in exfat_find_dir_entry()

In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential use-after-free in exfatfinddirentry In exfatfinddirentry, the bufferhead obtained from exfatgetdentry is released with brelsebh before the fall-through TYPEEXTEND branch reads the directory entry through ep...

PT-2026-61124

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the exfat find dir entry function. The problem occurs when a buffer head obtained from exfat get dentry is released using brelsebh before the TYPE EXTEND...

Linux Distros Unpatched Vulnerability : CVE-2026-63808

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - exfat: fix potential use-after-free in exfatfinddirentry In exfatfinddirentry, the bufferhead obtained from exfatgetdentry is released with brelsebh before the...

CVE-2026-45785 OpenMcdf: Uncatchable infinite loop in DirectoryTree.TryGetDirectoryEntry on crafted CFB directory cycle

OpenMcdf is a fully .NET / C library to manipulate Compound File Binary File Format files, also known as Structured Storage. In 3.1.3 and earlier, the BST name-lookup loop in DirectoryTree.TryGetDirectoryEntry OpenMcdf/DirectoryTree.cs:35-46 walks directory entries by repeatedly calling...

kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM x86 shadow paging mechanism. This vulnerability occurs when a host page directory entry PDE mapping is changed from within the guest, leading to an unexpected role mismatch in shadow paging. This mismatch can cause a...

kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM x86 shadow paging mechanism. This vulnerability occurs when a host page directory entry PDE mapping is changed from within the guest, leading to an unexpected role mismatch in shadow paging. This mismatch can cause a...

kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM x86 shadow paging mechanism. This vulnerability occurs when a host page directory entry PDE mapping is changed from within the guest, leading to an unexpected role mismatch in shadow paging. This mismatch can cause a...

kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM x86 shadow paging mechanism. This vulnerability occurs when a host page directory entry PDE mapping is changed from within the guest, leading to an unexpected role mismatch in shadow paging. This mismatch can cause a...

SUSE CVE-2026-53359

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix shadow paging use-after-free due to unexpected role Commit 0cb2af2ea66ad "KVM: x86: Fix shadow paging use-after-free due to unexpected GFN" fixed a shadow paging mismatch between stored and computed GFNs; the bug...

UBUNTU-CVE-2026-53359

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix shadow paging use-after-free due to unexpected role Commit 0cb2af2ea66ad "KVM: x86: Fix shadow paging use-after-free due to unexpected GFN" fixed a shadow paging mismatch between stored and computed GFNs; the bug...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush the cache for the PASID table before using it. When writing the address of a newly allocated, zero-initialized PASID table to a PASID directory entry, do so after flushing the CPU cache for this PASID table, not...

Linux Distros Unpatched Vulnerability : CVE-2026-10645

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The Zephyr ext2 filesystem driver subsys/fs/ext2 trusted the on-disk directory entry fields dereclen and denamelen when walking a directory block...

CVE-2026-10645

The Zephyr ext2 filesystem driver subsys/fs/ext2 trusted the on-disk directory entry fields dereclen and denamelen when walking a directory block. ext2fetchdirentry guarded only with denamelen EXT2MAXFILENAME, but denamelen is a uint8t and EXT2MAXFILENAME is 255, so the check is always false; the...

CVE-2025-70099

A NULL pointer dereference in the ext4direngetnamelen function in include/ext4dir.h of lwext4 1.0.0 allows attackers to cause a denial of service by supplying a specially crafted EXT4 filesystem image with malformed directory entries. During directory iteration, the code may fail to validate the...

CVE-2026-46175

Summary of CVE-2026-46175 (f2fs FGGC issue) : In the Linux kernel’s f2fs filesystem, Foreground Garbage Collection (FGGC) of node blocks could leave the fsync and dentry marks uncleared, causing fsck to misinterpret migrated data as fsync-written. The root cause is that the marks were not cleared...

SUSE CVE-2026-45862

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush cache for PASID table before using it When writing the address of a freshly allocated zero-initialized PASID table to a PASID directory entry, do that after the CPU cache flush for this PASID table, not before i...

PT-2026-37386

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the OCFS2 file system where the ocfs2 validate inode block function fails to validate the size of inline data when reading an inode from disk. In cases of filesystem...

CVE-2026-6386

In order to apply a particular protection key to an address range, the kernel must update the corresponding page table entries. The subroutine which handled this failed to take into account the presence of 1GB largepage mappings created using the shmcreatelargepage3 interface. In particular, it...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007302)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007302 advisory. In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix OOB in nilfssetdetype The size of the nilfstypebymode array in the fs/nilfs2/dir.c fi...