{"id":"UBUNTU-CVE-2023-1386","details":"A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the guest to elevate their privileges within the guest and help a host local user to elevate privileges on the host.","modified":"2026-04-02T19:18:42.808804Z","published":"2023-07-24T16:15:00Z","upstream":["CVE-2023-1386"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-1386"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-1386"}],"affected":[{"package":{"name":"qemu","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/qemu@2.0.0+dfsg-2ubuntu1.47+esm4?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.0+dfsg-3ubuntu5","1.5.0+dfsg-3ubuntu6","1.6.0+dfsg-2ubuntu1","1.6.0+dfsg-2ubuntu2","1.6.0+dfsg-2ubuntu3","1.6.0+dfsg-2ubuntu4","1.7.0+dfsg-2ubuntu1","1.7.0+dfsg-2ubuntu2","1.7.0+dfsg-2ubuntu3","1.7.0+dfsg-2ubuntu4","1.7.0+dfsg-2ubuntu5","1.7.0+dfsg-2ubuntu7","1.7.0+dfsg-2ubuntu8","1.7.0+dfsg-2ubuntu9","1.7.0+dfsg-3ubuntu1~ppa1","1.7.0+dfsg-3ubuntu1","1.7.0+dfsg-3ubuntu2","1.7.0+dfsg-3ubuntu3","1.7.0+dfsg-3ubuntu4","1.7.0+dfsg-3ubuntu5","1.7.0+dfsg-3ubuntu6","1.7.0+dfsg-3ubuntu7","2.0.0~rc1+dfsg-0ubuntu1","2.0.0~rc1+dfsg-0ubuntu2","2.0.0~rc1+dfsg-0ubuntu3","2.0.0~rc1+dfsg-0ubuntu3.1","2.0.0+dfsg-2ubuntu1","2.0.0+dfsg-2ubuntu1.1","2.0.0+dfsg-2ubuntu1.2","2.0.0+dfsg-2ubuntu1.3","2.0.0+dfsg-2ubuntu1.5","2.0.0+dfsg-2ubuntu1.6","2.0.0+dfsg-2ubuntu1.7","2.0.0+dfsg-2ubuntu1.8","2.0.0+dfsg-2ubuntu1.9","2.0.0+dfsg-2ubuntu1.10","2.0.0+dfsg-2ubuntu1.11","2.0.0+dfsg-2ubuntu1.13","2.0.0+dfsg-2ubuntu1.14","2.0.0+dfsg-2ubuntu1.15","2.0.0+dfsg-2ubuntu1.16","2.0.0+dfsg-2ubuntu1.17","2.0.0+dfsg-2ubuntu1.18","2.0.0+dfsg-2ubuntu1.19","2.0.0+dfsg-2ubuntu1.20","2.0.0+dfsg-2ubuntu1.21","2.0.0+dfsg-2ubuntu1.22","2.0.0+dfsg-2ubuntu1.24","2.0.0+dfsg-2ubuntu1.25","2.0.0+dfsg-2ubuntu1.26","2.0.0+dfsg-2ubuntu1.27","2.0.0+dfsg-2ubuntu1.28","2.0.0+dfsg-2ubuntu1.29","2.0.0+dfsg-2ubuntu1.30","2.0.0+dfsg-2ubuntu1.31","2.0.0+dfsg-2ubuntu1.32","2.0.0+dfsg-2ubuntu1.33","2.0.0+dfsg-2ubuntu1.34","2.0.0+dfsg-2ubuntu1.35","2.0.0+dfsg-2ubuntu1.36","2.0.0+dfsg-2ubuntu1.38","2.0.0+dfsg-2ubuntu1.39","2.0.0+dfsg-2ubuntu1.40","2.0.0+dfsg-2ubuntu1.41","2.0.0+dfsg-2ubuntu1.42","2.0.0+dfsg-2ubuntu1.43","2.0.0+dfsg-2ubuntu1.44","2.0.0+dfsg-2ubuntu1.45","2.0.0+dfsg-2ubuntu1.46","2.0.0+dfsg-2ubuntu1.47","2.0.0+dfsg-2ubuntu1.47+esm1","2.0.0+dfsg-2ubuntu1.47+esm2","2.0.0+dfsg-2ubuntu1.47+esm3","2.0.0+dfsg-2ubuntu1.47+esm4"],"ecosystem_specific":{"priority_reason":"Low 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