{"id":"CVE-2020-24165","aliases":["DEBIAN-CVE-2020-24165","DLA-3604-1","EUVD-2020-16900","GHSA-xc5f-ww2c-46pr","OESA-2023-1654","OESA-2023-1655","UBUNTU-CVE-2020-24165","USN-6567-1"],"status":"disputed","title":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute...","description":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS). Note: This is disputed as a bug and not a valid security issue by multiple third parties.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00697,"percentile":0.53498,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2023-08-28T00:00:00Z","modified":"2026-10-26T12:02:30Z","fixes":[{"ecosystem":"Debian:12","package":"qemu","fixed_in":["1:5.0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"qemu","fixed_in":["1:5.0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"qemu","fixed_in":["1:5.0-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"qemu","fixed_in":["1:4.2-3ubuntu6.28"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.0-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.0-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.0-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.1+dfsg-8+deb10u11"}]}],"versions":["1:3.1+dfsg-8","1:3.1+dfsg-8+deb10u10","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+deb10u9","1:3.1+dfsg-8~deb10u1"],"bundled":3},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0-76.oe1"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP3","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.0-80.oe1"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2-3ubuntu6.28"}]}],"versions":["1:4.0+dfsg-0ubuntu9","1:4.0+dfsg-0ubuntu10","1:4.2-1ubuntu1","1:4.2-1ubuntu2","1:4.2-3ubuntu1","1:4.2-3ubuntu2","1:4.2-3ubuntu3","1:4.2-3ubuntu4","1:4.2-3ubuntu5","1:4.2-3ubuntu6","1:4.2-3ubuntu6.1","1:4.2-3ubuntu6.2","1:4.2-3ubuntu6.3","1:4.2-3ubuntu6.4","1:4.2-3ubuntu6.5","1:4.2-3ubuntu6.6","1:4.2-3ubuntu6.7","1:4.2-3ubuntu6.8","1:4.2-3ubuntu6.9","1:4.2-3ubuntu6.10","1:4.2-3ubuntu6.11","1:4.2-3ubuntu6.12","1:4.2-3ubuntu6.14","1:4.2-3ubuntu6.15","1:4.2-3ubuntu6.16","1:4.2-3ubuntu6.17","1:4.2-3ubuntu6.18","1:4.2-3ubuntu6.19","1:4.2-3ubuntu6.21","1:4.2-3ubuntu6.23","1:4.2-3ubuntu6.24","1:4.2-3ubuntu6.25","1:4.2-3ubuntu6.26","1:4.2-3ubuntu6.27"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2-3ubuntu6.28"}]}],"versions":["1:4.0+dfsg-0ubuntu9","1:4.0+dfsg-0ubuntu10","1:4.2-1ubuntu1","1:4.2-1ubuntu2","1:4.2-3ubuntu1","1:4.2-3ubuntu2","1:4.2-3ubuntu3","1:4.2-3ubuntu4","1:4.2-3ubuntu5","1:4.2-3ubuntu6","1:4.2-3ubuntu6.1","1:4.2-3ubuntu6.2","1:4.2-3ubuntu6.3","1:4.2-3ubuntu6.4","1:4.2-3ubuntu6.5","1:4.2-3ubuntu6.6","1:4.2-3ubuntu6.7","1:4.2-3ubuntu6.8","1:4.2-3ubuntu6.9","1:4.2-3ubuntu6.10","1:4.2-3ubuntu6.11","1:4.2-3ubuntu6.12","1:4.2-3ubuntu6.14","1:4.2-3ubuntu6.15","1:4.2-3ubuntu6.16","1:4.2-3ubuntu6.17","1:4.2-3ubuntu6.18","1:4.2-3ubuntu6.19","1:4.2-3ubuntu6.21","1:4.2-3ubuntu6.23","1:4.2-3ubuntu6.24","1:4.2-3ubuntu6.25","1:4.2-3ubuntu6.26","1:4.2-3ubuntu6.27"],"bundled":11},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.2+dfsg-2ubuntu6.16"}]}],"versions":["1:6.0+dfsg-2expubuntu1","1:6.0+dfsg-2expubuntu2","1:6.0+dfsg-2expubuntu4","1:6.2+dfsg-2ubuntu5","1:6.2+dfsg-2ubuntu6","1:6.2+dfsg-2ubuntu6.1","1:6.2+dfsg-2ubuntu6.2","1:6.2+dfsg-2ubuntu6.3","1:6.2+dfsg-2ubuntu6.4","1:6.2+dfsg-2ubuntu6.5","1:6.2+dfsg-2ubuntu6.6","1:6.2+dfsg-2ubuntu6.7","1:6.2+dfsg-2ubuntu6.8","1:6.2+dfsg-2ubuntu6.9","1:6.2+dfsg-2ubuntu6.10","1:6.2+dfsg-2ubuntu6.11","1:6.2+dfsg-2ubuntu6.12","1:6.2+dfsg-2ubuntu6.13","1:6.2+dfsg-2ubuntu6.14","1:6.2+dfsg-2ubuntu6.15"],"bundled":11}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"qemu","product":"qemu"}],"references":[{"url":"https://bugs.launchpad.net/qemu/+bug/1863025","tags":["x_transferred","Issue Tracking","report"]},{"url":"https://pastebin.com/iqCbjdT8","tags":["x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00006.html","tags":["mailing-list","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20231006-0012/","tags":["x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24165","tags":["advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20231006-0012"},{"url":"https://github.com/advisories/GHSA-xc5f-ww2c-46pr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-24165","tags":["advisory"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1654","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13791","tags":["advisory"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1655","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-24165","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-6567-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-24165","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2020-14394","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-3611","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-3638","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-1544","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-2861","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-3180","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-3255","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-3301","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-3354","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-4135","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-5088","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-40360","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-42467","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-24165","description":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS). Note: This is disputed as a bug and not a valid security issue by multiple third parties.","status":"disputed","published":"2023-08-28T00:00:00Z","modified":"2024-08-04T15:05:11.905Z","updated_at":"2026-11-02T14:35:54.468882Z"}],"euvd":[{"id":"EUVD-2020-16900","description":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS). Note: This is disputed as a bug and not a valid security issue by multiple third parties.","status":"published","published":"2023-08-28T00:00:00Z","modified":"2024-08-04T15:05:11Z","updated_at":"2026-11-03T03:07:20.733107Z"}],"ghsa":[{"id":"GHSA-xc5f-ww2c-46pr","title":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute...","description":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS).","status":"published","published":"2023-08-28T21:31:06Z","modified":"2024-04-04T07:14:49Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T14:56:49.265207Z"}],"nvd":[{"id":"CVE-2020-24165","description":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS). Note: This is disputed as a bug and not a valid security issue by multiple third parties.","status":"disputed","published":"2023-08-28T21:15:07.51Z","modified":"2026-06-17T03:05:16.477Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:47.910346Z"}],"osv":[{"id":"CVE-2020-24165","description":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS). Note: This is disputed as a bug and not a valid security issue by multiple third parties.","status":"published","published":"2023-08-28T21:15:07.51Z","modified":"2026-10-24T10:30:29.611784628Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:15.534837Z"},{"id":"DEBIAN-CVE-2020-24165","description":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS). Note: This is disputed as a bug and not a valid security issue by multiple third parties.","status":"published","published":"2023-08-28T21:15:07.51Z","modified":"2026-10-26T12:02:30.042475295Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:33.729655Z"},{"id":"OESA-2023-1654","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\n\r\n\r\nSecurity Fix(es):\r\n\r\nhw/pci/pci.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access by providing an address near the end of the PCI configuration space.(CVE-2020-13791)\r\n\r\nAn issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS).(CVE-2020-24165)","status":"published","published":"2023-09-15T11:06:06Z","modified":"2026-08-18T01:17:02.927005551Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"OESA-2023-1655","title":"qemu security update","description":"QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.\r\n\r\n\r\n\r\nSecurity Fix(es):\r\n\r\nhw/pci/pci.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access by providing an address near the end of the PCI configuration space.(CVE-2020-13791)\r\n\r\nAn issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS).(CVE-2020-24165)","status":"published","published":"2023-09-15T11:06:06Z","modified":"2026-08-18T01:17:03.451268338Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"UBUNTU-CVE-2020-24165","description":"An issue was discovered in TCG Accelerator in QEMU 4.2.0, allows local attackers to execute arbitrary code, escalate privileges, and cause a denial of service (DoS). Note: This is disputed as a bug and not a valid security issue by multiple third parties.","status":"published","published":"2023-08-28T21:15:00Z","modified":"2026-02-04T02:30:39.095542Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:23.905183Z"},{"id":"DLA-3604-1","title":"qemu - security update","status":"published","published":"2023-10-05T00:00:00Z","modified":"2026-03-09T01:22:11.419907Z","updated_at":"2026-11-02T15:46:11.734021Z"},{"id":"USN-6567-1","title":"qemu vulnerabilities","description":"Gaoning Pan and Xingwei Li discovered that QEMU incorrectly handled the\nUSB xHCI controller device. A privileged guest attacker could possibly use\nthis issue to cause QEMU to crash, leading to a denial of service. This\nissue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2020-14394)\n\nIt was discovered that QEMU incorrectly handled the TCG Accelerator. A\nlocal attacker could use this issue to cause QEMU to crash, leading to a\ndenial of service, or possibly execute arbitrary code and esclate\nprivileges. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-24165)\n\nIt was discovered that QEMU incorrectly handled the Intel HD audio device.\nA malicious guest attacker could use this issue to cause QEMU to crash,\nleading to a denial of service. This issue only affected Ubuntu 22.04 LTS.\n(CVE-2021-3611)\n\nIt was discovered that QEMU incorrectly handled the ATI VGA device. A\nmalicious guest attacker could use this issue to cause QEMU to crash,\nleading to a denial of service. This issue only affected Ubuntu 20.04 LTS.\n(CVE-2021-3638)\n\nIt was discovered that QEMU incorrectly handled the VMWare paravirtual RDMA\ndevice. A malicious guest attacker could use this issue to cause QEMU to\ncrash, leading to a denial of service. (CVE-2023-1544)\n\nIt was discovered that QEMU incorrectly handled the 9p passthrough\nfilesystem. A malicious guest attacker could possibly use this issue to\nopen special files and escape the exported 9p tree. This issue only\naffected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04.\n(CVE-2023-2861)\n\nIt was discovered that QEMU incorrectly handled the virtual crypto device.\nA malicious guest attacker could use this issue to cause QEMU to crash,\nleading to a denial of service, or possibly execute arbitrary code. This\nissue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04.\n(CVE-2023-3180)\n\nIt was discovered that QEMU incorrectly handled the built-in VNC server.\nA remote authenticated attacker could possibly use this issue to cause QEMU\nto stop responding, resulting in a denial of service. This issue only\naffected Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-3255)\n\nIt was discovered that QEMU incorrectly handled net device hot-unplugging.\nA malicious guest attacker could use this issue to cause QEMU to crash,\nleading to a denial of service. This issue only affected Ubuntu 22.04 LTS\nand Ubuntu 23.04. (CVE-2023-3301)\n\nIt was discovered that QEMU incorrectly handled the built-in VNC server.\nA remote attacker could possibly use this issue to cause QEMU to crash,\nresulting in a denial of service. This issue only affected Ubuntu 20.04\nLTS, Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-3354)\n\nIt was discovered that QEMU incorrectly handled NVME devices. A malicious\nguest attacker could use this issue to cause QEMU to crash, leading to a\ndenial of service. This issue only affected Ubuntu 23.10. (CVE-2023-40360)\n\nIt was discovered that QEMU incorrectly handled NVME devices. A malicious\nguest attacker could use this issue to cause QEMU to crash, leading to a\ndenial of service, or possibly obtain sensitive information. This issue\nonly affected Ubuntu 23.10. (CVE-2023-4135)\n\nIt was discovered that QEMU incorrectly handled SCSI devices. A malicious\nguest attacker could use this issue to cause QEMU to crash, leading to a\ndenial of service. This issue only affected Ubuntu 23.04 and Ubuntu 23.10.\n(CVE-2023-42467)\n\nIt was discovered that QEMU incorrectly handled certain disk offsets. A\nmalicious guest attacker could possibly use this issue to gain control of\nthe host in certain nested virtualization scenarios. (CVE-2023-5088)\n","status":"published","published":"2024-01-08T17:46:08Z","modified":"2026-04-27T17:17:23.282117066Z","updated_at":"2026-11-02T16:58:17.305935Z"}]}}