{"id":"CVE-2024-50142","summary":"xfrm: validate new SA's prefixlen using SA family when sel.family is unset","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: validate new SA's prefixlen using SA family when sel.family is unset\n\nThis expands the validation introduced in commit 07bf7908950a (\"xfrm:\nValidate address prefix lengths in the xfrm selector.\")\n\nsyzbot created an SA with\n    usersa.sel.family = AF_UNSPEC\n    usersa.sel.prefixlen_s = 128\n    usersa.family = AF_INET\n\nBecause of the AF_UNSPEC selector, verify_newsa_info doesn't put\nlimits on prefixlen_{s,d}. But then copy_from_user_state sets\nx-\u003esel.family to usersa.family (AF_INET). Do the same conversion in\nverify_newsa_info before validating prefixlen_{s,d}, since that's how\nprefixlen is going to be used later on.","modified":"2026-04-02T12:21:18.754970Z","published":"2024-11-07T09:31:19.415Z","related":["ALSA-2024:10943","ALSA-2024:10944","ALSA-2024:11486","MGASA-2024-0368","MGASA-2024-0369","SUSE-SU-2025:0556-1","SUSE-SU-2025:0564-1","SUSE-SU-2025:0565-1","SUSE-SU-2025:0577-1","SUSE-SU-2025:0577-2","SUSE-SU-2025:0847-1","SUSE-SU-2025:0856-1","SUSE-SU-2025:0955-1","SUSE-SU-2025:20190-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20260-1","SUSE-SU-2025:20270-1","USN-7276-1","USN-7277-1","openSUSE-SU-2024:14500-1","openSUSE-SU-2025:14705-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50142.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563"},{"type":"WEB","url":"https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0a"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50142.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-50142"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"},{"fixed":"f31398570acf0f0804c644006f7bfa9067106b0a"},{"fixed":"401ad99a5ae7180dd9449eac104cb755f442e7f3"},{"fixed":"8df5cd51fd70c33aa1776e5cbcd82b0a86649d73"},{"fixed":"2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71"},{"fixed":"bce1afaa212ec380bf971614f70909a27882b862"},{"fixed":"7d9868180bd1e4cf37e7c5067362658971162366"},{"fixed":"e68dd80ba498265d2266b12dc3459164f4ff0c4a"},{"fixed":"3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50142.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}