Withdrawn by the publisher.

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.

Affected: openEuler:20.03-LTS-SP1: qemu, openEuler:20.03-LTS-SP2: qemu

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fix(es): A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.(CVE-2021-3682)

Security update for qemu

QEMU: net: Infinite loop in loopback mode may lead to stack overflow libvirt: Insecure sVirt label generation libvirt: Improper locking on ACL failure in virStoragePoolLookupByTargetPath API QEMU: usbredir: free() call on invalid pointer in bufp_alloc() ntfs-3g: Out-of-bounds heap buffer access in ntfs_get_attribute_value() due to incorrect check of bytes_in_use value in MFT records ntfs-3g: Heap buffer overflow triggered by a specially crafted Unicode string ntfs-3g: Heap buffer overflow in ntfs_attr_pread_i() triggered by specially crafted NTFS attributes ntfs-3g: Heap buffer overflow triggered by a specially crafted MFT section ntfs-3g: Heap buffer overflow triggered by a specially crafted NTFS inode pathname ntfs-3g: Stack buffer overflow triggered when correcting differences between MFT and MFTMirror sections ntfs-3g: Heap buffer overflow in ntfs_inode_real_open() triggered by a specially crafted NTFS inode ntfs-3g: Heap buffer overflow in ntfs_attr_setup_flag() triggered by a specially crafted NTFS attribute from MFT ntfs-3g: NULL pointer dereference in ntfs_extent_inode_open() ntfs-3g: Out-of-bounds read in ntfs_ie_lookup() ntfs-3g: Out-of-bounds read in ntfs_runlists_merge_i() ntfs-3g: Integer overflow in memmove() leading to heap buffer overflow in ntfs_attr_record_resize() ntfs-3g: Out-of-bounds read ntfs_attr_find_in_attrdef() triggered by an invalid attribute ntfs-3g: Heap buffer overflow in ntfs_inode_lookup_by_name() ntfs-3g: Endless recursion from ntfs_attr_pw…

Security update for xen

Affected: Ubuntu:Pro:14.04:LTS: qemu, Ubuntu:Pro:16.04:LTS: qemu, Ubuntu:18.04:LTS: qemu, Ubuntu:20.04:LTS: qemu, Ubuntu:22.04:LTS: qemu

A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.

Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in QEMU ausnutzen, um beliebigen Programmcode mit den Rechten des Dienstes auszuführen und einen Denial of Service Zustand herzustellen.