{"id":"CVE-2022-23092","aliases":["EUVD-2022-28197","GHSA-gvf3-496w-8fm9"],"status":"published","title":"Missing bounds check in 9p message handling","description":"The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents.  The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory.\n\nThe bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process.  This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00654,"percentile":0.51822,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2024-02-15T05:13:50Z","modified":"2026-06-17T04:29:29Z","products":[{"vendor":"freebsd","product":"freebsd"}],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-22:12.lib9p.asc","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://security.netapp.com/advisory/ntap-20240415-0009/","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23092"},{"url":"https://security.netapp.com/advisory/ntap-20240415-0009"},{"url":"https://github.com/advisories/GHSA-gvf3-496w-8fm9"}],"sources":{"cve":[{"id":"CVE-2022-23092","title":"Missing bounds check in 9p message handling","description":"The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents.  The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory.\n\nThe bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process.  This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.","status":"published","published":"2024-02-15T05:13:50.356Z","modified":"2025-02-13T16:29:03.221Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:34:29.478363Z"}],"euvd":[{"id":"EUVD-2022-28197","description":"The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents.  The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory.\n\nThe bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process.  This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.","status":"published","published":"2024-02-15T05:13:50Z","modified":"2025-02-13T16:29:03Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:03:52.752782Z"}],"ghsa":[{"id":"GHSA-gvf3-496w-8fm9","title":"The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when...","description":"The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents.  The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory.\n\nThe bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process.  This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.","status":"published","published":"2024-02-15T06:31:36Z","modified":"2024-08-29T21:32:06Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:58:08.12992Z"}],"nvd":[{"id":"CVE-2022-23092","description":"The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents.  The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory.\n\nThe bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process.  This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.","status":"published","published":"2024-02-15T06:15:45.19Z","modified":"2026-06-17T04:29:29.69Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:07:40.49892Z"}]}}