{"id":"CVE-2022-50010","state":"PUBLISHED","title":"video: fbdev: i740fb: Check the argument of i740_calc_vclk()","description":"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.","publishedAt":"2025-06-18T11:01:15.030Z","updatedAt":"2026-05-11T19:11:03.527Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"59cefb583c984c0da8cf21a4c57d26d5a20dff5c","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"656689cb03ada4650016c153346939a1c334b1ae","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"d2d375eb68b4b8de6ea7460483a26fa9de56b443","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"2b7f559152a33c55f51b569b22efbe5e24886798","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"4b20c61365140d432dee7da7aa294215e7b900d9","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"e740e787f06671455b59d1e498c9945f7b4e7b3b","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"f350812e2d15278f1d867eeb997407782234fb3c","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"40bf722f8064f50200b8c4f8946cd625b441dda9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/i740fb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.4","versionType":"semver"},{"version":"4.9.326","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.291","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.256","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.211","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.138","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.63","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.4","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/i740fb.c"]}],"references":["https://git.kernel.org/stable/c/59cefb583c984c0da8cf21a4c57d26d5a20dff5c","https://git.kernel.org/stable/c/656689cb03ada4650016c153346939a1c334b1ae","https://git.kernel.org/stable/c/d2d375eb68b4b8de6ea7460483a26fa9de56b443","https://git.kernel.org/stable/c/2b7f559152a33c55f51b569b22efbe5e24886798","https://git.kernel.org/stable/c/4b20c61365140d432dee7da7aa294215e7b900d9","https://git.kernel.org/stable/c/e740e787f06671455b59d1e498c9945f7b4e7b3b","https://git.kernel.org/stable/c/f350812e2d15278f1d867eeb997407782234fb3c","https://git.kernel.org/stable/c/40bf722f8064f50200b8c4f8946cd625b441dda9"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50010.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50010","state":"PUBLISHED","datePublished":"2025-06-18T11:01:15.030Z","dateUpdated":"2026-05-11T19:11:03.527Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-06-18T10:57:27.388Z"},"containers":{"cna":{"title":"video: fbdev: i740fb: Check the argument of i740_calc_vclk()","descriptions":[{"lang":"en","value":"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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"59cefb583c984c0da8cf21a4c57d26d5a20dff5c","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"656689cb03ada4650016c153346939a1c334b1ae","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"d2d375eb68b4b8de6ea7460483a26fa9de56b443","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"2b7f559152a33c55f51b569b22efbe5e24886798","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"4b20c61365140d432dee7da7aa294215e7b900d9","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"e740e787f06671455b59d1e498c9945f7b4e7b3b","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"f350812e2d15278f1d867eeb997407782234fb3c","versionType":"git"},{"version":"5350c65f4f15bbc111ffa629130d3f32cdd4ccf6","status":"affected","lessThan":"40bf722f8064f50200b8c4f8946cd625b441dda9","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/i740fb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.4","versionType":"semver"},{"version":"4.9.326","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.291","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.256","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.211","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.138","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.63","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.19.4","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/i740fb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/59cefb583c984c0da8cf21a4c57d26d5a20dff5c"},{"url":"https://git.kernel.org/stable/c/656689cb03ada4650016c153346939a1c334b1ae"},{"url":"https://git.kernel.org/stable/c/d2d375eb68b4b8de6ea7460483a26fa9de56b443"},{"url":"https://git.kernel.org/stable/c/2b7f559152a33c55f51b569b22efbe5e24886798"},{"url":"https://git.kernel.org/stable/c/4b20c61365140d432dee7da7aa294215e7b900d9"},{"url":"https://git.kernel.org/stable/c/e740e787f06671455b59d1e498c9945f7b4e7b3b"},{"url":"https://git.kernel.org/stable/c/f350812e2d15278f1d867eeb997407782234fb3c"},{"url":"https://git.kernel.org/stable/c/40bf722f8064f50200b8c4f8946cd625b441dda9"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:11:03.527Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"4.9.326"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"4.14.291"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"4.19.256"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.4.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.10.138"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.15.63"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"5.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}