{"id":"CVE-2022-49345","summary":"net: xfrm: unexport __init-annotated xfrm4_protocol_init()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: xfrm: unexport __init-annotated xfrm4_protocol_init()\n\nEXPORT_SYMBOL and __init is a bad combination because the .init.text\nsection is freed up after the initialization. Hence, modules cannot\nuse symbols annotated __init. The access to a freed symbol may end up\nwith kernel panic.\n\nmodpost used to detect it, but it has been broken for a decade.\n\nRecently, I fixed modpost so it started to warn it again, then this\nshowed up in linux-next builds.\n\nThere are two ways to fix it:\n\n  - Remove __init\n  - Remove EXPORT_SYMBOL\n\nI chose the latter for this case because the only in-tree call-site,\nnet/ipv4/xfrm4_policy.c is never compiled as modular.\n(CONFIG_XFRM is boolean)","modified":"2026-03-20T12:22:22.495186Z","published":"2025-02-26T02:11:00.976Z","related":["SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1241-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49345.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2b253fbc9f7b5db18d716436bdcf8ecef09fd63d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/31f3c6a4dcd3260a386e62cef2d5b36e902600a1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4a388f08d8784af48f352193d2b72aaf167a57a1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/85a055c03691e51499123194a14a0c249cf33227"},{"type":"WEB","url":"https://git.kernel.org/stable/c/be3884d5cd04ccd58294b83a02d70b7c5fca19d3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c58d82a1264813e69119c13e9804e2e60b664ad5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e04d59cfe0c0129df7aba7ef7bb17b96be2a64f2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e53cd3814504b2cadaba4d5a8a07eeea9ddacd03"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef6d2354de238b065d8799c80da4be9a6af18e39"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49345.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49345"},{"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":"2f32b51b609faea1e40bb8c5bd305f1351740936"},{"fixed":"c58d82a1264813e69119c13e9804e2e60b664ad5"},{"fixed":"e53cd3814504b2cadaba4d5a8a07eeea9ddacd03"},{"fixed":"31f3c6a4dcd3260a386e62cef2d5b36e902600a1"},{"fixed":"ef6d2354de238b065d8799c80da4be9a6af18e39"},{"fixed":"be3884d5cd04ccd58294b83a02d70b7c5fca19d3"},{"fixed":"85a055c03691e51499123194a14a0c249cf33227"},{"fixed":"e04d59cfe0c0129df7aba7ef7bb17b96be2a64f2"},{"fixed":"2b253fbc9f7b5db18d716436bdcf8ecef09fd63d"},{"fixed":"4a388f08d8784af48f352193d2b72aaf167a57a1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49345.json"}}],"schema_version":"1.7.5"}