{"cve":"CVE-2022-50359","nvd":{"published":"2025-09-17T15:15:34.633","modified":"2026-06-17T05:23:19.433","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx88: Fix a null-ptr-deref bug in buffer_prepare()\n\nWhen the driver calls cx88_risc_buffer() to prepare the buffer, the\nfunction call may fail, resulting in a empty buffer and null-ptr-deref\nlater in buffer_queue().\n\nThe following log can reveal it:\n\n[   41.822762] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI\n[   41.824488] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n[   41.828027] RIP: 0010:buffer_queue+0xc2/0x500\n[   41.836311] Call Trace:\n[   41.836945]  __enqueue_in_driver+0x141/0x360\n[   41.837262]  vb2_start_streaming+0x62/0x4a0\n[   41.838216]  vb2_core_streamon+0x1da/0x2c0\n[   41.838516]  __vb2_init_fileio+0x981/0xbc0\n[   41.839141]  __vb2_perform_fileio+0xbf9/0x1120\n[   41.840072]  vb2_fop_read+0x20e/0x400\n[   41.840346]  v4l2_read+0x215/0x290\n[   41.840603]  vfs_read+0x162/0x4c0\n\nFix this by checking the return value of cx88_risc_buffer()\n\n[hverkuil: fix coding style issues]","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/10c99d1c46ea9cd940029e17bab11d021f315c21","https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71","https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f","https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb","https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:10:08.713834912+00:00"},"epss":{"cve":"CVE-2022-50359","score":0.00213,"percentile":0.11629,"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."]}