{"id":"CVE-2022-50317","summary":"drm/bridge: megachips: Fix a null pointer dereference bug","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/bridge: megachips: Fix a null pointer dereference bug\n\nWhen removing the module we will get the following warning:\n\n[   31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered\n[   31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI\n[   31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\n[   31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130\n[   31.921825] Call Trace:\n[   31.922533]  stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw]\n[   31.923139]  i2c_device_remove+0x181/0x1f0\n\nThe two bridges (stdp2690, stdp4028) do not probe at the same time, so\nthe driver does not call ge_b850v3_resgiter() when probing, causing the\ndriver to try to remove the object that has not been initialized.\n\nFix this by checking whether both the bridges are probed.","modified":"2026-04-02T08:28:24.787308Z","published":"2025-09-15T14:48:50.167Z","related":["SUSE-SU-2025:03613-1","SUSE-SU-2025:03615-1","SUSE-SU-2025:03626-1","SUSE-SU-2025:03628-1","SUSE-SU-2025:3716-1","SUSE-SU-2025:3761-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50317.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1daf69228e310938177119c4eadcd30fc75c81e0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1ff673333d46d2c1b053ebd0c1c7c7c79e36943e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/21764467ab396d9f08921e0a5ffa1214244e1ad9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4610e7a4111fa3f3ce27c09d6d94008c55f1cd31"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5bc20bafcd87ba0858ab772cefc7047cb51bc249"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7371fad5cfe6eada6bb5523c895fd6074b15c2b9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/877e92e9b1bdeb580b31a46061005936be902cd4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aaa512ad1e59f2edf8a9e4f2b167a44b24670679"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50317.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50317"},{"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":"7649972d97fb98578fbc4a351416cf72895e7c4d"},{"fixed":"aaa512ad1e59f2edf8a9e4f2b167a44b24670679"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"16e3827904932eccfba0915f0c93b519de3536ac"},{"fixed":"5bc20bafcd87ba0858ab772cefc7047cb51bc249"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"50ad94f8654a53ec9ca3604a7a23cbaf166e0119"},{"fixed":"1daf69228e310938177119c4eadcd30fc75c81e0"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b8d10f601f226f055df8b5368d7ea7f369136cd5"},{"fixed":"877e92e9b1bdeb580b31a46061005936be902cd4"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"405856460d3e7aefb7c1aef047ec88fc4ef2e2a5"},{"fixed":"4610e7a4111fa3f3ce27c09d6d94008c55f1cd31"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"11632d4aa2b3f126790e81a4415d6c23103cf8bb"},{"fixed":"21764467ab396d9f08921e0a5ffa1214244e1ad9"},{"fixed":"7371fad5cfe6eada6bb5523c895fd6074b15c2b9"},{"fixed":"1ff673333d46d2c1b053ebd0c1c7c7c79e36943e"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"e449461989f0674f188d30494ffd3f5ba74c1a05"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50317.json"}}],"schema_version":"1.7.5"}