A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "qemu", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-block-extra", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-block-extra-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-guest-agent", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-guest-agent-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-kvm", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-arm", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-arm-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-common", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-common-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-mips", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-mips-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-misc", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-misc-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-ppc", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-ppc-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-s390x", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-s390x-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-sparc", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-sparc-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-x86", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-system-x86-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-user", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-user-binfmt", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-user-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-user-static", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-user-static-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-utils", "binary_version": "1:2.11+dfsg-1ubuntu7.39" }, { "binary_name": "qemu-utils-dbgsym", "binary_version": "1:2.11+dfsg-1ubuntu7.39" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "qemu", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-block-extra", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-block-extra-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-guest-agent", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-guest-agent-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-kvm", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-arm", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-arm-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-common", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-common-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-data", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-gui", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-gui-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-mips", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-mips-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-misc", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-misc-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-ppc", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-ppc-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-s390x", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-s390x-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-sparc", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-sparc-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-x86", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-x86-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-x86-microvm", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-x86-microvm-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-x86-xen", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-system-x86-xen-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-user", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-user-binfmt", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-user-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-user-static", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-user-static-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-utils", "binary_version": "1:4.2-3ubuntu6.21" }, { "binary_name": "qemu-utils-dbgsym", "binary_version": "1:4.2-3ubuntu6.21" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "qemu", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-block-extra", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-block-extra-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-guest-agent", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-guest-agent-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-arm", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-arm-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-common", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-common-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-data", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-gui", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-gui-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-mips", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-mips-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-misc", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-misc-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-ppc", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-ppc-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-s390x", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-s390x-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-sparc", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-sparc-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-x86", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-x86-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-x86-microvm", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-x86-xen", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-system-x86-xen-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-user", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-user-binfmt", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-user-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-user-static", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-user-static-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-utils", "binary_version": "1:6.2+dfsg-2ubuntu5" }, { "binary_name": "qemu-utils-dbgsym", "binary_version": "1:6.2+dfsg-2ubuntu5" } ] }