cbcvebase.
CVE-2022-50102
published 2025-06-18

CVE-2022-50102: 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…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.16%
5.6th percentile
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.

Affected

21 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.0.2-1 (bookworm)linux 6.0.2-1 (bookworm)
linuxlinux——
linuxlinux>= 681e14730c73cc2c71af282c001de6bc71c22f00 < 76b3f0a0b56e53a960a14624a0f48b3d94b5e7e776b3f0a0b56e53a960a14624a0f48b3d94b5e7e7
linuxlinux>= 681e14730c73cc2c71af282c001de6bc71c22f00 < b9a66f23612b84617e04412169e155a4b92f632db9a66f23612b84617e04412169e155a4b92f632d
linuxlinux>= 681e14730c73cc2c71af282c001de6bc71c22f00 < a249e1b89ca25e1c34bdf96154e3f6224a91a9afa249e1b89ca25e1c34bdf96154e3f6224a91a9af
linuxlinux>= 681e14730c73cc2c71af282c001de6bc71c22f00 < 0288fa799e273b08839037499d704dc7bdc13e9a0288fa799e273b08839037499d704dc7bdc13e9a
linuxlinux>= 681e14730c73cc2c71af282c001de6bc71c22f00 < 236c1502520b7b08955467ec2e50b3232e34f1f9236c1502520b7b08955467ec2e50b3232e34f1f9
linuxlinux>= 681e14730c73cc2c71af282c001de6bc71c22f00 < 9ebc5031958c1f3a2795e4533b4091d77c738d149ebc5031958c1f3a2795e4533b4091d77c738d14
linuxlinux>= 681e14730c73cc2c71af282c001de6bc71c22f00 < 15661642511b2b192077684a89f42a8d95d5428615661642511b2b192077684a89f42a8d95d54286
linuxlinux>= 681e14730c73cc2c71af282c001de6bc71c22f00 < 2f1c4523f7a3aaabe7e53d3ebd378292947e95c82f1c4523f7a3aaabe7e53d3ebd378292947e95c8
linuxlinux_kernel>= 0 < 5.10.140-15.10.140-1
linuxlinux_kernel>= 0 < 6.0.2-16.0.2-1
linuxlinux_kernel>= 0 < 6.0.2-16.0.2-1
linuxlinux_kernel>= 0 < 6.0.2-16.0.2-1
linuxlinux_kernel>= 2.6.22 < 4.14.2914.14.291
linuxlinux_kernel>= 4.15 < 4.19.2564.19.256
linuxlinux_kernel>= 4.20 < 5.4.2115.4.211
linuxlinux_kernel>= 5.11 < 5.15.615.15.61
linuxlinux_kernel>= 5.16 < 5.18.185.18.18
linuxlinux_kernel>= 5.19 < 5.19.25.19.2
linuxlinux_kernel>= 5.5 < 5.10.1375.10.137

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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