CVE-2023-2861

A flaw was found in the 9p passthrough filesystem 9pfs implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder...

CVE-2023-2861

A flaw was found in the 9p passthrough filesystem 9pfs implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder...

CVE-2023-2861 Qemu: 9pfs: improper access control on special files

A flaw was found in the 9p passthrough filesystem 9pfs implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder...

CVE-2023-2861

The CVE-2023-2861 issue affects QEMU’s 9pfs (9p passthrough filesystem) where the server allowed opening host-side special files, potentially enabling a malicious client to escape the exported 9p tree by creating/opening a device file in the shared folder. Affected are QEMU implementations in var...

CVE-2023-2861

A flaw was found in the 9p passthrough filesystem 9pfs implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder...

Vulnerabilities fixed in Citrix Hypervisor

Citrix has released an update to fix vulnerabilities in Citrix hypervisor. The vulnerability with reference CVE-2023-23583 allows a local malicious party to use a virtual guest system to compromise the host system via PCI passthrough. This vulnerability is only present when the vulnerable product...

x86/AMD: mismatch in IOMMU quarantine page table levels

ISSUE DESCRIPTION The current setup of the quarantine page tables assumes that the quarantine domain domio has been initialized with an address width of DEFAULTDOMAINADDRESSWIDTH 48 and hence 4 page table levels. However domio being a PV domain gets the AMD-Vi IOMMU page tables levels based on th...

SUSE-SU-2023:4174-1 Security update for xen

This update for xen fixes the following issues: - CVE-2023-34323: Fixed a potential crash in C Xenstored due to an incorrect assertion XSA-440 bsc1215744. - CVE-2023-34326: Fixed a missing IOMMU TLB flush on x86 AMD systems with IOMMU hardware and PCI passthrough enabled XSA-442 bsc1215746. -...

x86/AMD: missing IOMMU TLB flushing

ISSUE DESCRIPTION The caching invalidation guidelines from the AMD-Vi specification 48882—Rev 3.07-PUB—Oct 2022 is incorrect on some hardware, as devices will malfunction see stale DMA mappings if some fields of the DTE are updated but the IOMMU TLB is not flushed. Such stale DMA mappings can poi...

Huawei EulerOS: Security Advisory for qemu (EulerOS-SA-2023-2906)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2023 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...

Design/Logic Flaw

A flaw was found in the 9p passthrough filesystem 9pfs implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the gue...

CVE-2023-1386

A flaw was found in the 9p passthrough filesystem 9pfs implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the gue...

CVE-2023-1386: Improper Preservation of Permissions

A flaw was found in the 9p passthrough filesystem 9pfs implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the gue...

CVE-2023-2861

A flaw was found in the 9p passthrough filesystem 9pfs implementation in QEMU. The 9pfs server did not prohibit opening special files on the host side, potentially allowing a malicious client to escape from the exported 9p tree by creating and opening a device file in the shared folder...

Citrix Gateway Store Domain Passthrough Limitation

Explain domain passthrough support limitation with Netscaler Gateway scenario...

SUSE CVE-2022-42335

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging HAP is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handlin...

CVE-2022-42335

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging HAP is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handlin...

ALPINE-CVE-2022-42335

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging HAP is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handlin...

UBUNTU-CVE-2022-42335

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging HAP is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handlin...

PT-2023-9641

Name of the Vulnerable Software and Affected Versions QEMU affected versions not specified Description A flaw was found in the 9p passthrough filesystem 9pfs implementation. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly...