{"schema_version":"1.9.0","id":"CVE-2022-50010","published":"2025-06-18T11:01:15.030Z","modified":"2026-08-12T03:51:49.503128699Z","related":["SUSE-SU-2025:02264-1","SUSE-SU-2025:02308-1","SUSE-SU-2025:02320-1","SUSE-SU-2025:02321-1","SUSE-SU-2025:02322-1","SUSE-SU-2025:02537-1"],"summary":"video: fbdev: i740fb: Check the argument of i740_calc_vclk()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: i740fb: Check the argument of i740_calc_vclk()\n\nSince the user can control the arguments of the ioctl() from the user\nspace, under special arguments that may result in a divide-by-zero bug.\n\nIf the user provides an improper 'pixclock' value that makes the argumet\nof i740_calc_vclk() less than 'I740_RFREQ_FIX', it will cause a\ndivide-by-zero bug in:\n    drivers/video/fbdev/i740fb.c:353 p_best = min(15, ilog2(I740_MAX_VCO_FREQ / (freq / I740_RFREQ_FIX)));\n\nThe following log can reveal it:\n\ndivide error: 0000 [#1] PREEMPT SMP KASAN PTI\nRIP: 0010:i740_calc_vclk drivers/video/fbdev/i740fb.c:353 [inline]\nRIP: 0010:i740fb_decode_var drivers/video/fbdev/i740fb.c:646 [inline]\nRIP: 0010:i740fb_set_par+0x163f/0x3b70 drivers/video/fbdev/i740fb.c:742\nCall Trace:\n fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1034\n do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1110\n fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1189\n\nFix this by checking the argument of i740_calc_vclk() first.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6"},{"fixed":"59cefb583c984c0da8cf21a4c57d26d5a20dff5c"},{"fixed":"656689cb03ada4650016c153346939a1c334b1ae"},{"fixed":"d2d375eb68b4b8de6ea7460483a26fa9de56b443"},{"fixed":"2b7f559152a33c55f51b569b22efbe5e24886798"},{"fixed":"4b20c61365140d432dee7da7aa294215e7b900d9"},{"fixed":"e740e787f06671455b59d1e498c9945f7b4e7b3b"},{"fixed":"f350812e2d15278f1d867eeb997407782234fb3c"},{"fixed":"40bf722f8064f50200b8c4f8946cd625b441dda9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50010.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.4.0"},{"fixed":"4.9.326"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"4.14.291"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.256"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.211"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.138"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.63"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50010.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2b7f559152a33c55f51b569b22efbe5e24886798"},{"type":"WEB","url":"https://git.kernel.org/stable/c/40bf722f8064f50200b8c4f8946cd625b441dda9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4b20c61365140d432dee7da7aa294215e7b900d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/59cefb583c984c0da8cf21a4c57d26d5a20dff5c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/656689cb03ada4650016c153346939a1c334b1ae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d2d375eb68b4b8de6ea7460483a26fa9de56b443"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e740e787f06671455b59d1e498c9945f7b4e7b3b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f350812e2d15278f1d867eeb997407782234fb3c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50010.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50010"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50010.json"}}