CVE - CVE-2022-50102

CVE-ID
CVE-2022-50102	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: arkfb: Fix a divide-by-zero bug in ark_set_pixclock() 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 in: drivers/video/fbdev/arkfb.c:784: ark_set_pixclock(info, (hdiv * info->var.pixclock) / hmul); with hdiv=1, pixclock=1 and hmul=2 you end up with (1*1)/2 = (int) 0. and then in: drivers/video/fbdev/arkfb.c:504: rv = dac_set_freq(par->dac, 0, 1000000000 / pixclock); we'll get a division-by-zero. The following log can reveal it: divide error: 0000 [#1] PREEMPT SMP KASAN PTI RIP: 0010:ark_set_pixclock drivers/video/fbdev/arkfb.c:504 [inline] RIP: 0010:arkfb_set_par+0x10fc/0x24c0 drivers/video/fbdev/arkfb.c:784 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 ark_set_pixclock() 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/0288fa799e273b08839037499d704dc7bdc13e9a URL:https://git.kernel.org/stable/c/0288fa799e273b08839037499d704dc7bdc13e9a MISC:https://git.kernel.org/stable/c/15661642511b2b192077684a89f42a8d95d54286 URL:https://git.kernel.org/stable/c/15661642511b2b192077684a89f42a8d95d54286 MISC:https://git.kernel.org/stable/c/236c1502520b7b08955467ec2e50b3232e34f1f9 URL:https://git.kernel.org/stable/c/236c1502520b7b08955467ec2e50b3232e34f1f9 MISC:https://git.kernel.org/stable/c/2f1c4523f7a3aaabe7e53d3ebd378292947e95c8 URL:https://git.kernel.org/stable/c/2f1c4523f7a3aaabe7e53d3ebd378292947e95c8 MISC:https://git.kernel.org/stable/c/76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7 URL:https://git.kernel.org/stable/c/76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7 MISC:https://git.kernel.org/stable/c/9ebc5031958c1f3a2795e4533b4091d77c738d14 URL:https://git.kernel.org/stable/c/9ebc5031958c1f3a2795e4533b4091d77c738d14 MISC:https://git.kernel.org/stable/c/a249e1b89ca25e1c34bdf96154e3f6224a91a9af URL:https://git.kernel.org/stable/c/a249e1b89ca25e1c34bdf96154e3f6224a91a9af MISC:https://git.kernel.org/stable/c/b9a66f23612b84617e04412169e155a4b92f632d URL:https://git.kernel.org/stable/c/b9a66f23612b84617e04412169e155a4b92f632d
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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