{"id":"CVE-2022-49907","summary":"net: mdio: fix undefined behavior in bit shift for __mdiobus_register","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mdio: fix undefined behavior in bit shift for __mdiobus_register\n\nShifting signed 32-bit value by 31 bits is undefined, so changing\nsignificant bit to unsigned. The UBSAN warning calltrace like below:\n\nUBSAN: shift-out-of-bounds in drivers/net/phy/mdio_bus.c:586:27\nleft shift of 1 by 31 places cannot be represented in type 'int'\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x7d/0xa5\n dump_stack+0x15/0x1b\n ubsan_epilogue+0xe/0x4e\n __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c\n __mdiobus_register+0x49d/0x4e0\n fixed_mdio_bus_init+0xd8/0x12d\n do_one_initcall+0x76/0x430\n kernel_init_freeable+0x3b3/0x422\n kernel_init+0x24/0x1e0\n ret_from_fork+0x1f/0x30\n \u003c/TASK\u003e","modified":"2026-04-11T12:44:40.991961Z","published":"2025-05-01T14:10:51.073Z","related":["SUSE-SU-2025:01983-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49907.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/40e4eb324c59e11fcb927aa46742d28aba6ecb8a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4954b5359eb141499492fadfab891e28905509e2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/634f066d02bdb22a26da7deb0c7617ab1a65fc9d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7006176a3c863e3e353ce1b8a349ef5bb1b9320e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/985a88bf0b27193522bba7856b1763f428cef19d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a3fafc974be37319679f36dc4e7cca7db1e02973"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49907.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49907"},{"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":"4fd5f812c23c7deee6425f4a318e85c317cd1d6c"},{"fixed":"20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7"},{"fixed":"7006176a3c863e3e353ce1b8a349ef5bb1b9320e"},{"fixed":"a3fafc974be37319679f36dc4e7cca7db1e02973"},{"fixed":"4954b5359eb141499492fadfab891e28905509e2"},{"fixed":"634f066d02bdb22a26da7deb0c7617ab1a65fc9d"},{"fixed":"985a88bf0b27193522bba7856b1763f428cef19d"},{"fixed":"6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0"},{"fixed":"40e4eb324c59e11fcb927aa46742d28aba6ecb8a"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49907.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.28"},{"fixed":"4.9.333"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"4.14.299"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.265"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.224"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.154"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.78"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.0.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49907.json"}}],"schema_version":"1.7.5"}