{"id":"CVE-2021-3608","aliases":["DEBIAN-CVE-2021-3608","DLA-3099-1","EUVD-2021-26912","GHSA-37hv-5w7w-hhjw","OESA-2022-1617","SUSE-SU-2021:2442-1","SUSE-SU-2021:2448-1","SUSE-SU-2021:2474-1","SUSE-SU-2021:2591-1","UBUNTU-CVE-2021-3608","USN-5010-1","openSUSE-SU-2021:1202-1","openSUSE-SU-2021:2442-1","openSUSE-SU-2021:2474-1","openSUSE-SU-2021:2591-1","openSUSE-SU-2024:11287-1"],"status":"published","title":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior...","description":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.","severity":{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00363,"percentile":0.3038,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-824"],"published":"2021-06-18T00:00:00Z","modified":"2026-10-24T10:30:35Z","fixes":[{"ecosystem":"Debian:12","package":"qemu","fixed_in":["1:5.2+dfsg-11"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"qemu","fixed_in":["1:5.2+dfsg-11"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"qemu","fixed_in":["1:5.2+dfsg-11"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"qemu","fixed_in":["1:4.2-3ubuntu6.17"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"qemu","fixed_in":["1:6.0+dfsg-2expubuntu1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-11"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-11"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-11"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.1+dfsg-8+deb10u9"}]}],"versions":["1:3.1+dfsg-8","1:3.1+dfsg-8+deb10u2","1:3.1+dfsg-8+deb10u3","1:3.1+dfsg-8+deb10u4","1:3.1+dfsg-8+deb10u5","1:3.1+dfsg-8+deb10u6","1:3.1+dfsg-8+deb10u7","1:3.1+dfsg-8+deb10u8","1:3.1+dfsg-8~deb10u1"],"bundled":35},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0-62.oe1"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP2","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0-66.oe1"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP3","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0-66.oe1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux 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flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.","status":"published","published":"2022-02-24T18:50:20Z","modified":"2024-08-03T17:01:08.294Z","cwes":["CWE-824"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-26912","description":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.","status":"published","published":"2022-02-24T18:50:20Z","modified":"2024-08-03T17:01:08Z","updated_at":"2026-11-03T03:25:11.953192Z"}],"ghsa":[{"id":"GHSA-37hv-5w7w-hhjw","title":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior...","description":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.","status":"published","published":"2022-02-25T00:00:59Z","modified":"2023-02-02T05:07:18Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-824"],"updated_at":"2026-11-02T14:52:28.437617Z"}],"nvd":[{"id":"CVE-2021-3608","description":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.","status":"published","published":"2022-02-24T19:15:09.167Z","modified":"2026-06-17T04:05:25.907Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-824"],"updated_at":"2026-11-02T14:07:04.6896Z"}],"osv":[{"id":"CVE-2021-3608","description":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.","status":"published","published":"2022-02-24T19:15:09.167Z","modified":"2026-10-24T10:30:35.981688596Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:20.13324Z"},{"id":"DEBIAN-CVE-2021-3608","description":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.","status":"published","published":"2022-02-24T19:15:09.167Z","modified":"2026-10-23T18:03:29.545448464Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"OESA-2022-1617","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\nSecurity Fix(es):\r\n\r\nAn integer overflow was found in the QEMU implementation of VMWare\u0026apos;s paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \u0026quot;PVRDMA_REG_DSRHIGH\u0026quot; write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.(CVE-2021-3607)\r\n\r\nA flaw was found in the QEMU implementation of VMWare\u0026apos;s paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \u0026quot;PVRDMA_REG_DSRHIGH\u0026quot; write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.(CVE-2021-3608)","status":"published","published":"2022-04-25T11:04:53Z","modified":"2026-08-18T01:16:29.109488626Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:52:39.528805Z"},{"id":"UBUNTU-CVE-2021-3608","description":"A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a \"PVRDMA_REG_DSRHIGH\" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.","status":"published","published":"2021-06-18T00:00:00Z","modified":"2026-02-04T04:02:08.718008Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:27.870979Z"},{"id":"DLA-3099-1","title":"qemu - security update","status":"published","published":"2022-09-05T00:00:00Z","modified":"2026-03-09T01:23:02.473037Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"openSUSE-SU-2021:1202-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2021-3527: usb: unbounded stack allocation in usbredir (bsc#1186012)\n- CVE-2021-3582: Fix possible mremap overflow in the pvrdma (bsc#1187499)\n- CVE-2021-3592: Fix for slirp: invalid pointer initialization may lead to information disclosure (bootp) (bsc#1187364)\n- CVE-2021-3593: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp6) (bsc#1187365)\n- CVE-2021-3594: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp) (bsc#1187367)\n- CVE-2021-3595: Fixed slirp: invalid pointer initialization may lead to information disclosure (tftp) (bsc#1187366)\n- CVE-2021-3607: Ensure correct input on ring init (bsc#1187539)\n- CVE-2021-3608: Fix the ring init error flow (bsc#1187538)\n- CVE-2021-3611: Fix intel-hda segmentation fault due to stack overflow (bsc#1187529)\n- CVE-2021-3682: usbredir: free call on invalid pointer in bufp_alloc (bsc#1189145)\n- CVE-2020-35503: NULL pointer dereference issue in megasas-gen2 host bus adapter (bsc#1180432)\n- CVE-2020-35504,CVE-2020-35505,CVE-2020-35506: NULL pointer dereference in ESP (bsc#1180433 bsc#1180434 bsc#1180435)\n- CVE-2021-20255: eepro100: stack overflow via infinite recursion (bsc#1182651)\n\nThis update was imported from the SUSE:SLE-15-SP2:Update update project.","status":"published","published":"2021-08-26T16:06:03Z","modified":"2026-02-04T03:01:20.988586Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2021:2442-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- CVE-2021-3582: Fix possible mremap overflow in the pvrdma (bsc#1187499)\n- CVE-2021-3607: Ensure correct input on ring init (bsc#1187539)\n- CVE-2021-3608: Fix the ring init error flow (bsc#1187538)\n- CVE-2021-3611: Fix intel-hda segmentation fault due to stack overflow (bsc#1187529)\n","status":"published","published":"2021-07-21T12:01:33Z","modified":"2026-02-04T03:28:48.796816Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2021:2474-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2021-3595: Fixed slirp: invalid pointer initialization may lead to information disclosure (tftp) (bsc#1187366)\n- CVE-2021-3592: Fix for slirp: invalid pointer initialization may lead to information disclosure (bootp) (bsc#1187364)\n- CVE-2021-3594: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp) (bsc#1187367)\n- CVE-2021-3593: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp6) (bsc#1187365)\n- CVE-2021-3582: Fix possible mremap overflow in the pvrdma (bsc#1187499)\n- CVE-2021-3607: Ensure correct input on ring init (bsc#1187539)\n- CVE-2021-3608: Fix the ring init error flow (bsc#1187538)\n- CVE-2021-3611: Fix intel-hda segmentation fault due to stack overflow (bsc#1187529)\n","status":"published","published":"2021-07-27T09:41:19Z","modified":"2026-02-04T04:09:20.891392Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2021:2591-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2021-3595: Fixed slirp: invalid pointer initialization may lead to information disclosure (tftp) (bsc#1187366)\n- CVE-2021-3592: Fix for slirp: invalid pointer initialization may lead to information disclosure (bootp) (bsc#1187364)\n- CVE-2021-3594: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp) (bsc#1187367)\n- CVE-2021-3593: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp6) (bsc#1187365)\n- CVE-2021-3582: Fix possible mremap overflow in the pvrdma (bsc#1187499)\n- CVE-2021-3607: Ensure correct input on ring init (bsc#1187539)\n- CVE-2021-3608: Fix the ring init error flow (bsc#1187538)\n- CVE-2021-3611: Fix intel-hda segmentation fault due to stack overflow (bsc#1187529)\n- CVE-2020-25085: Fix out-of-bounds access issue while doing multi block SDMA (bsc#1176681)\n\nOther issues fixed:\n\n- QEMU BIOS fails to read stage2 loader (on s390x)(bsc#1186290)\n- Fix qemu hang while cancelling migrating hugepage vm (bsc#1185591)\n\n","status":"published","published":"2021-08-02T10:56:22Z","modified":"2026-02-04T04:32:11.176485Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2024:11287-1","title":"qemu-6.1.0-32.1 on GA media","description":"These are all security issues fixed in the qemu-6.1.0-32.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:57.481645Z","updated_at":"2026-11-02T16:58:34.894275Z"},{"id":"SUSE-SU-2021:2442-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\n- CVE-2021-3582: Fix possible mremap overflow in the pvrdma (bsc#1187499)\n- CVE-2021-3607: Ensure correct input on ring init (bsc#1187539)\n- CVE-2021-3608: Fix the ring init error flow (bsc#1187538)\n- CVE-2021-3611: Fix intel-hda segmentation fault due to stack overflow (bsc#1187529)\n","status":"published","published":"2021-07-21T12:01:31Z","modified":"2026-02-04T03:54:47.168882Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"SUSE-SU-2021:2448-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\nSecurity fixes:\n\n- CVE-2021-3595: Fixed slirp: invalid pointer initialization may lead to information disclosure (tftp) (bsc#1187366)\n- CVE-2021-3592: Fix for slirp: invalid pointer initialization may lead to information disclosure (bootp) (bsc#1187364)\n- CVE-2021-3594: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp) (bsc#1187367)\n- CVE-2021-3593: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp6) (bsc#1187365)\n- CVE-2021-3582: Fixed possible mremap overflow in the pvrdma (bsc#1187499)\n- CVE-2021-3607: Ensure correct input on ring init (bsc#1187539)\n- CVE-2021-3608: Fixed the ring init error flow (bsc#1187538)\n- CVE-2021-3611: Fixed intel-hda segmentation fault due to stack overflow (bsc#1187529)\n\nOther fixes:\n\n- Fix qemu hang while cancelling migrating hugepage vm (bsc#1185591)\n","status":"published","published":"2021-07-22T08:59:11Z","modified":"2026-02-04T02:48:52.436145Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"SUSE-SU-2021:2474-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2021-3595: Fixed slirp: invalid pointer initialization may lead to information disclosure (tftp) (bsc#1187366)\n- CVE-2021-3592: Fix for slirp: invalid pointer initialization may lead to information disclosure (bootp) (bsc#1187364)\n- CVE-2021-3594: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp) (bsc#1187367)\n- CVE-2021-3593: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp6) (bsc#1187365)\n- CVE-2021-3582: Fix possible mremap overflow in the pvrdma (bsc#1187499)\n- CVE-2021-3607: Ensure correct input on ring init (bsc#1187539)\n- CVE-2021-3608: Fix the ring init error flow (bsc#1187538)\n- CVE-2021-3611: Fix intel-hda segmentation fault due to stack overflow (bsc#1187529)\n","status":"published","published":"2021-07-27T09:41:18Z","modified":"2026-02-04T04:26:25.72777Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"SUSE-SU-2021:2591-1","title":"Security update for qemu","description":"This update for qemu fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2021-3595: Fixed slirp: invalid pointer initialization may lead to information disclosure (tftp) (bsc#1187366)\n- CVE-2021-3592: Fix for slirp: invalid pointer initialization may lead to information disclosure (bootp) (bsc#1187364)\n- CVE-2021-3594: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp) (bsc#1187367)\n- CVE-2021-3593: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp6) (bsc#1187365)\n- CVE-2021-3582: Fix possible mremap overflow in the pvrdma (bsc#1187499)\n- CVE-2021-3607: Ensure correct input on ring init (bsc#1187539)\n- CVE-2021-3608: Fix the ring init error flow (bsc#1187538)\n- CVE-2021-3611: Fix intel-hda segmentation fault due to stack overflow (bsc#1187529)\n- CVE-2020-25085: Fix out-of-bounds access issue while doing multi block SDMA (bsc#1176681)\n\nOther issues fixed:\n\n- QEMU BIOS fails to read stage2 loader (on s390x)(bsc#1186290)\n- Fix qemu hang while cancelling migrating hugepage vm (bsc#1185591)\n\n","status":"published","published":"2021-08-02T10:56:38Z","modified":"2026-02-04T03:45:18.360482Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"USN-5010-1","title":"qemu vulnerabilities","description":"Lei Sun discovered that QEMU incorrectly handled certain MMIO operations.\nAn attacker inside the guest could possibly use this issue to cause QEMU to\ncrash, resulting in a denial of service. (CVE-2020-15469)\n\nWenxiang Qian discovered that QEMU incorrectly handled certain ATAPI\ncommands. An attacker inside the guest could possibly use this issue to\ncause QEMU to crash, resulting in a denial of service. This issue only\naffected Ubuntu 21.04. (CVE-2020-29443)\n\nCheolwoo Myung discovered that QEMU incorrectly handled SCSI device\nemulation. An attacker inside the guest could possibly use this issue to\ncause QEMU to crash, resulting in a denial of service. (CVE-2020-35504,\nCVE-2020-35505, CVE-2021-3392)\n\nAlex Xu discovered that QEMU incorrectly handled the virtio-fs shared file\nsystem daemon. An attacker inside the guest could possibly use this issue\nto read and write to host devices. This issue only affected Ubuntu 20.10.\n(CVE-2020-35517)\n\nIt was discovered that QEMU incorrectly handled ARM Generic Interrupt\nController emulation. An attacker inside the guest could possibly use this\nissue to cause QEMU to crash, resulting in a denial of service. This issue\nonly affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10.\n(CVE-2021-20221)\n\nAlexander Bulekov, Cheolwoo Myung, Sergej Schumilo, Cornelius Aschermann,\nand Simon Werner discovered that QEMU incorrectly handled e1000 device\nemulation. An attacker inside the guest could possibly use this issue to\ncause QEMU to hang, resulting in a denial of service. This issue only\naffected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10.\n(CVE-2021-20257)\n\nIt was discovered that QEMU incorrectly handled SDHCI controller emulation.\nAn attacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service, or possibly execute arbitrary code. In\nthe default installation, when QEMU is used in combination with libvirt,\nattackers would be isolated by the libvirt AppArmor profile.\n(CVE-2021-3409)\n\nIt was discovered that QEMU incorrectly handled certain NIC emulation\ndevices. An attacker inside the guest could possibly use this issue to\ncause QEMU to hang or crash, resulting in a denial of service. This issue\nonly affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10.\n(CVE-2021-3416)\n\nRemy Noel discovered that QEMU incorrectly handled the USB redirector\ndevice. An attacker inside the guest could possibly use this issue to\ncause QEMU to consume resources, resulting in a denial of service.\n(CVE-2021-3527)\n\nIt was discovered that QEMU incorrectly handled the virtio vhost-user GPU\ndevice. An attacker inside the guest could possibly use this issue to cause\nQEMU to consume resources, leading to a denial of service. This issue only\naffected Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-3544)\n\nIt was discovered that QEMU incorrectly handled the virtio vhost-user GPU\ndevice. An attacker inside the guest could possibly use this issue to\nobtain sensitive host information. This issue only affected Ubuntu 20.04\nLTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-3545)\n\nIt was discovered that QEMU incorrectly handled the virtio vhost-user GPU\ndevice. An attacker inside the guest could use this issue to cause QEMU to\ncrash, resulting in a denial of service, or possibly execute arbitrary\ncode. In the default installation, when QEMU is used in combination with\nlibvirt, attackers would be isolated by the libvirt AppArmor profile. This\nissue only affected Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04.\n(CVE-2021-3546)\n\nIt was discovered that QEMU incorrectly handled the PVRDMA device. An\nattacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service, or possibly execute arbitrary code. In\nthe default installation, when QEMU is used in combination with libvirt,\nattackers would be isolated by the libvirt AppArmor profile. This issue\nonly affected Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04.\n(CVE-2021-3582, CVE-2021-3607, CVE-2021-3608)\n\nIt was discovered that QEMU SLiRP networking incorrectly handled certain\nudp packets. An attacker inside a guest could possibly use this issue to\nleak sensitive information from the host. (CVE-2021-3592, CVE-2021-3593,\nCVE-2021-3594, CVE-2021-3595)\n","status":"published","published":"2021-07-15T17:53:50Z","modified":"2026-04-27T16:03:35.569511515Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}