{"id":"GHSA-vf95-55w6-qmrf","revision":"4cb8f59b90764bf9983acb0a9fddf154","records":[{"revision":"4cb8f59b90764bf9983acb0a9fddf154","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"GHSA-vf95-55w6-qmrf","aliases":["CVE-2025-62596"],"title":"youki container escape and denial of service due to arbitrary write gadgets and procfs write redirects","description":"### Impact ###\n\nyouki’s apparmor handling performs insufficiently strict write-target validation, which—combined with path substitution during pathname resolution—can allow writes to unintended procfs locations.\n\n**Weak write-target check**\nyouki only verifies that the destination lies somewhere under procfs. As a result, a write intended for `/proc/self/attr/apparmor/exec` can succeed even if the path has been redirected to `/proc/sys/kernel/hostname`(which is also in procfs).\n\n**Path substitution**\nWhile resolving a path component-by-component, a shared-mount race can substitute intermediate components and redirect the final target.\n\nThis is a different project, but the core logic is similar to the CVE in runc. Issues were identified in runc, and verification was also conducted in youki to confirm the problems.\nhttps://github.com/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm\n\n### Credits ###\n\nThanks to Li Fubang (@lifubang from acmcoder.com, CIIC) and Tõnis Tiigi (@tonistiigi from Docker) for both independently discovering runc's original vulnerability, as well as Aleksa Sarai (@cyphar from SUSE) for the original research into this class of security issues and solutions.","state":0,"publishedAt":"2025-11-05T18:45:18+00:00","modifiedAt":"2025-11-15T02:25:28+00:00","affected":[{"ecosystem":"crates.io","name":"youki","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.5.7"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm","https://github.com/youki-dev/youki/security/advisories/GHSA-vf95-55w6-qmrf","https://nvd.nist.gov/vuln/detail/CVE-2025-62596","https://github.com/youki-dev/youki/commit/5886c91073b9be748bd8d5aed49c4a820548030a","https://github.com/youki-dev/youki","https://pkg.go.dev/github.com/cyphar/filepath-securejoin/pathrs-lite/procfs","https://youtu.be/tGseJW_uBB8","https://youtu.be/y1PaBzxwRWQ"],"sourceUrl":"https://github.com/advisories/GHSA-vf95-55w6-qmrf","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-vf95-55w6-qmrf","identifiers":["GHSA-vf95-55w6-qmrf","CVE-2025-62596"]},"retained":false,"historicalAffected":[]}],"coverage":[]}