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...

FreeBSD 安全漏洞

FreeBSD is a Unix-like operating system developed by the FreeBSD Foundation. There is a security vulnerability in FreeBSD, which stems from kernel subroutines that fail to consider the 1GB large-page mappings created using the shmcreatelargepage interface when updating page table entries. This...

SUSE: Security Advisory (SUSE-SU-2019:0825-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

insufficient TLB flushing / improper large page mappings with AMD IOMMUs

ISSUE DESCRIPTION In order to be certain that no undue access to memory is possible anymore after IOMMU mappings of this memory have been removed, Translation Lookaside Buffers TLBs need to be flushed after most changes to such mappings. Xen bypassed certain IOMMU flushes on AMD x86 hardware...

openSUSE Security Update : xen (openSUSE-2015-730)

Xen was updated to fix 6 security issues. These security issues were fixed : - CVE-2014-0222: Validate L2 table size to avoid integer overflows bsc877642. - CVE-2015-4037: Insecure temporary file use in /net/slirp.c bsc932267. - CVE-2015-7835: Uncontrolled creation of large page mappings by PV...

SUSE-SU-2015:1952-1 Security update for xen

xen was updated to fix eight security issues. These security issues were fixed: - CVE-2015-4037: The slirpsmb function in net/slirp.c created temporary files with predictable names, which allowed local users to cause a denial of service instantiation failure by creating /tmp/qemu-smb.- files befo...

x86: Uncontrolled creation of large page mappings by PV guests

ISSUE DESCRIPTION The code to validate level 2 page table entries is bypassed when certain conditions are satisfied. This means that a PV guest can create writeable mappings using super page mappings. Such writeable mappings can violate Xen intended invariants for pages which Xen is supposed to...

xen-kernel -- Uncontrolled creation of large page mappings by PV guests

The Xen Project reports: The code to validate level 2 page table entries is bypassed when certain conditions are satisfied. This means that a PV guest can create writable mappings using super page mappings. Such writable mappings can violate Xen intended invariants for pages which Xen is supposed...