{"id":"USN-4467-3","aliases":[],"status":"published","title":"qemu regression","description":"USN-4467-1 fixed vulnerabilities in QEMU. The fix for CVE-2020-13754\nintroduced a regression in certain environments. This update fixes the\nproblem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Ren Ding, Hanqing Zhao, Alexander Bulekov, and Anatoly Trosinenko\n discovered that the QEMU incorrectly handled certain msi-x mmio operations.\n An attacker inside a guest could possibly use this issue to cause QEMU to\n crash, resulting in a denial of service. (CVE-2020-13754)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2021-02-22T16:04:05Z","modified":"2026-02-10T04:41:54Z","fixes":[{"ecosystem":"Ubuntu:16.04:LTS","package":"qemu","fixed_in":["1:2.5+dfsg-5ubuntu10.51"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"qemu","fixed_in":["1:2.11+dfsg-1ubuntu7.36"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"qemu","fixed_in":["1:4.2-3ubuntu6.14"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.5+dfsg-5ubuntu10.51"}]}],"versions":["1:2.3+dfsg-5ubuntu9","1:2.3+dfsg-5ubuntu10","1:2.4+dfsg-4ubuntu1","1:2.4+dfsg-4ubuntu2","1:2.4+dfsg-4ubuntu3","1:2.4+dfsg-5ubuntu3","1:2.5+dfsg-1ubuntu2","1:2.5+dfsg-1ubuntu3","1:2.5+dfsg-1ubuntu4","1:2.5+dfsg-1ubuntu5","1:2.5+dfsg-5ubuntu1","1:2.5+dfsg-5ubuntu2","1:2.5+dfsg-5ubuntu4","1:2.5+dfsg-5ubuntu6","1:2.5+dfsg-5ubuntu7","1:2.5+dfsg-5ubuntu10","1:2.5+dfsg-5ubuntu10.1","1:2.5+dfsg-5ubuntu10.2","1:2.5+dfsg-5ubuntu10.3","1:2.5+dfsg-5ubuntu10.4","1:2.5+dfsg-5ubuntu10.5","1:2.5+dfsg-5ubuntu10.6","1:2.5+dfsg-5ubuntu10.7","1:2.5+dfsg-5ubuntu10.8","1:2.5+dfsg-5ubuntu10.9","1:2.5+dfsg-5ubuntu10.10","1:2.5+dfsg-5ubuntu10.11","1:2.5+dfsg-5ubuntu10.13","1:2.5+dfsg-5ubuntu10.14","1:2.5+dfsg-5ubuntu10.15","1:2.5+dfsg-5ubuntu10.16","1:2.5+dfsg-5ubuntu10.20","1:2.5+dfsg-5ubuntu10.21","1:2.5+dfsg-5ubuntu10.22","1:2.5+dfsg-5ubuntu10.24","1:2.5+dfsg-5ubuntu10.25","1:2.5+dfsg-5ubuntu10.26","1:2.5+dfsg-5ubuntu10.28","1:2.5+dfsg-5ubuntu10.29","1:2.5+dfsg-5ubuntu10.30","1:2.5+dfsg-5ubuntu10.31","1:2.5+dfsg-5ubuntu10.32","1:2.5+dfsg-5ubuntu10.33","1:2.5+dfsg-5ubuntu10.34","1:2.5+dfsg-5ubuntu10.35","1:2.5+dfsg-5ubuntu10.36","1:2.5+dfsg-5ubuntu10.37","1:2.5+dfsg-5ubuntu10.38","1:2.5+dfsg-5ubuntu10.39","1:2.5+dfsg-5ubuntu10.40","1:2.5+dfsg-5ubuntu10.41","1:2.5+dfsg-5ubuntu10.42","1:2.5+dfsg-5ubuntu10.43","1:2.5+dfsg-5ubuntu10.44","1:2.5+dfsg-5ubuntu10.45","1:2.5+dfsg-5ubuntu10.46","1:2.5+dfsg-5ubuntu10.47","1:2.5+dfsg-5ubuntu10.48","1:2.5+dfsg-5ubuntu10.49"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.11+dfsg-1ubuntu7.36"}]}],"versions":["1:2.10+dfsg-0ubuntu3","1:2.10+dfsg-0ubuntu4","1:2.10+dfsg-0ubuntu5","1:2.11+dfsg-1ubuntu1","1:2.11+dfsg-1ubuntu2","1:2.11+dfsg-1ubuntu4","1:2.11+dfsg-1ubuntu5","1:2.11+dfsg-1ubuntu6","1:2.11+dfsg-1ubuntu7","1:2.11+dfsg-1ubuntu7.1","1:2.11+dfsg-1ubuntu7.2","1:2.11+dfsg-1ubuntu7.3","1:2.11+dfsg-1ubuntu7.4","1:2.11+dfsg-1ubuntu7.5","1:2.11+dfsg-1ubuntu7.6","1:2.11+dfsg-1ubuntu7.7","1:2.11+dfsg-1ubuntu7.8","1:2.11+dfsg-1ubuntu7.9","1:2.11+dfsg-1ubuntu7.10","1:2.11+dfsg-1ubuntu7.12","1:2.11+dfsg-1ubuntu7.13","1:2.11+dfsg-1ubuntu7.14","1:2.11+dfsg-1ubuntu7.15","1:2.11+dfsg-1ubuntu7.17","1:2.11+dfsg-1ubuntu7.18","1:2.11+dfsg-1ubuntu7.19","1:2.11+dfsg-1ubuntu7.20","1:2.11+dfsg-1ubuntu7.21","1:2.11+dfsg-1ubuntu7.22","1:2.11+dfsg-1ubuntu7.23","1:2.11+dfsg-1ubuntu7.25","1:2.11+dfsg-1ubuntu7.26","1:2.11+dfsg-1ubuntu7.27","1:2.11+dfsg-1ubuntu7.28","1:2.11+dfsg-1ubuntu7.29","1:2.11+dfsg-1ubuntu7.31","1:2.11+dfsg-1ubuntu7.32","1:2.11+dfsg-1ubuntu7.33","1:2.11+dfsg-1ubuntu7.34","1:2.11+dfsg-1ubuntu7.35"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"qemu","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.2-3ubuntu6.14"}]}],"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"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-4467-3","tags":["advisory"]},{"url":"https://launchpad.net/bugs/1914883","tags":["report"]}],"sources":{"osv":[{"id":"USN-4467-3","title":"qemu regression","description":"USN-4467-1 fixed vulnerabilities in QEMU. The fix for CVE-2020-13754\nintroduced a regression in certain environments. This update fixes the\nproblem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Ren Ding, Hanqing Zhao, Alexander Bulekov, and Anatoly Trosinenko\n discovered that the QEMU incorrectly handled certain msi-x mmio operations.\n An attacker inside a guest could possibly use this issue to cause QEMU to\n crash, resulting in a denial of service. (CVE-2020-13754)\n","status":"published","published":"2021-02-22T16:04:05Z","modified":"2026-02-10T04:41:54Z","updated_at":"2026-11-02T16:58:14.547547Z"}]}}