CVE - CVE-2022-50010

CVE-ID
CVE-2022-50010	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: video: fbdev: i740fb: Check the argument of i740_calc_vclk() Since the user can control the arguments of the ioctl() from the user space, under special arguments that may result in a divide-by-zero bug. If the user provides an improper 'pixclock' value that makes the argumet of i740_calc_vclk() less than 'I740_RFREQ_FIX', it will cause a divide-by-zero bug in: drivers/video/fbdev/i740fb.c:353 p_best = min(15, ilog2(I740_MAX_VCO_FREQ / (freq / I740_RFREQ_FIX))); The following log can reveal it: divide error: 0000 [#1] PREEMPT SMP KASAN PTI RIP: 0010:i740_calc_vclk drivers/video/fbdev/i740fb.c:353 [inline] RIP: 0010:i740fb_decode_var drivers/video/fbdev/i740fb.c:646 [inline] RIP: 0010:i740fb_set_par+0x163f/0x3b70 drivers/video/fbdev/i740fb.c:742 Call Trace: fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1034 do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1110 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1189 Fix this by checking the argument of i740_calc_vclk() first.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2b7f559152a33c55f51b569b22efbe5e24886798 URL:https://git.kernel.org/stable/c/2b7f559152a33c55f51b569b22efbe5e24886798 MISC:https://git.kernel.org/stable/c/40bf722f8064f50200b8c4f8946cd625b441dda9 URL:https://git.kernel.org/stable/c/40bf722f8064f50200b8c4f8946cd625b441dda9 MISC:https://git.kernel.org/stable/c/4b20c61365140d432dee7da7aa294215e7b900d9 URL:https://git.kernel.org/stable/c/4b20c61365140d432dee7da7aa294215e7b900d9 MISC:https://git.kernel.org/stable/c/59cefb583c984c0da8cf21a4c57d26d5a20dff5c URL:https://git.kernel.org/stable/c/59cefb583c984c0da8cf21a4c57d26d5a20dff5c MISC:https://git.kernel.org/stable/c/656689cb03ada4650016c153346939a1c334b1ae URL:https://git.kernel.org/stable/c/656689cb03ada4650016c153346939a1c334b1ae MISC:https://git.kernel.org/stable/c/d2d375eb68b4b8de6ea7460483a26fa9de56b443 URL:https://git.kernel.org/stable/c/d2d375eb68b4b8de6ea7460483a26fa9de56b443 MISC:https://git.kernel.org/stable/c/e740e787f06671455b59d1e498c9945f7b4e7b3b URL:https://git.kernel.org/stable/c/e740e787f06671455b59d1e498c9945f7b4e7b3b MISC:https://git.kernel.org/stable/c/f350812e2d15278f1d867eeb997407782234fb3c URL:https://git.kernel.org/stable/c/f350812e2d15278f1d867eeb997407782234fb3c
Assigning CNA
kernel.org
Date Record Created
20250618	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250618)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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