{"cve":"CVE-2022-50317","nvd":{"published":"2025-09-15T15:15:43.620","modified":"2026-06-17T05:23:13.353","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/1daf69228e310938177119c4eadcd30fc75c81e0","https://git.kernel.org/stable/c/1ff673333d46d2c1b053ebd0c1c7c7c79e36943e","https://git.kernel.org/stable/c/21764467ab396d9f08921e0a5ffa1214244e1ad9","https://git.kernel.org/stable/c/4610e7a4111fa3f3ce27c09d6d94008c55f1cd31","https://git.kernel.org/stable/c/5bc20bafcd87ba0858ab772cefc7047cb51bc249"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:08:41.295252406+00:00"},"epss":{"cve":"CVE-2022-50317","score":0.0016,"percentile":0.05112,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}