{"id":"CVE-2022-49350","summary":"net: mdio: unexport __init-annotated mdio_bus_init()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mdio: unexport __init-annotated mdio_bus_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,\ndrivers/net/phy/phy_device.c is never compiled as modular.\n(CONFIG_PHYLIB is boolean)","modified":"2026-03-20T12:22:22.382588Z","published":"2025-02-26T02:11:03.514Z","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-2022-49350.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/35b42dce619701f1300fb8498dae82c9bb1f0263"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5534bcd7c40299862237c4a8fd9c5031b3db1538"},{"type":"WEB","url":"https://git.kernel.org/stable/c/59fa94cddf9eef8d8dae587373eed8b8f4eb11d7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6a90a44d53428a3bf01bd80df9ba78b19959270c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7759c3222815b945a94b212bc0c6cdec475cfec2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab64ec2c75683f30ccde9eaaf0761002f901aa12"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f2f0f8c18b60ca64ff50892ed899cf1c77864755"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f5c68137f1191ba3fcf6260ec71b30be2e2bf4c3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49350.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49350"},{"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":"90eff9096c01ba90cdae504a6b95ee87fe2556a3"},{"fixed":"ab64ec2c75683f30ccde9eaaf0761002f901aa12"},{"fixed":"5534bcd7c40299862237c4a8fd9c5031b3db1538"},{"fixed":"6a90a44d53428a3bf01bd80df9ba78b19959270c"},{"fixed":"7759c3222815b945a94b212bc0c6cdec475cfec2"},{"fixed":"59fa94cddf9eef8d8dae587373eed8b8f4eb11d7"},{"fixed":"f5c68137f1191ba3fcf6260ec71b30be2e2bf4c3"},{"fixed":"f2f0f8c18b60ca64ff50892ed899cf1c77864755"},{"fixed":"35b42dce619701f1300fb8498dae82c9bb1f0263"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49350.json"}}],"schema_version":"1.7.5"}