CVE-2022-50102

MEDIUM EPSS 5.2%
Published Jun 18, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
5.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-369

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥2.6.22  –  <4.14.291
linuxlinux_kernel*≥4.15  –  <4.19.256
linuxlinux_kernel*≥4.20  –  <5.4.211
linuxlinux_kernel*≥5.5  –  <5.10.137
linuxlinux_kernel*≥5.11  –  <5.15.61
linuxlinux_kernel*≥5.16  –  <5.18.18
linuxlinux_kernel*≥5.19  –  <5.19.2

References 8

  • git.kernel.org https://git.kernel.org/stable/c/0288fa799e273b08839037499d704dc7bdc13e9a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/15661642511b2b192077684a89f42a8d95d54286
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/236c1502520b7b08955467ec2e50b3232e34f1f9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2f1c4523f7a3aaabe7e53d3ebd378292947e95c8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ebc5031958c1f3a2795e4533b4091d77c738d14
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a249e1b89ca25e1c34bdf96154e3f6224a91a9af
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b9a66f23612b84617e04412169e155a4b92f632d
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0288fa799e273b08839037499d704dc7bdc13e9a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/15661642511b2b192077684a89f42a8d95d54286
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/236c1502520b7b08955467ec2e50b3232e34f1f9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2f1c4523f7a3aaabe7e53d3ebd378292947e95c8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ebc5031958c1f3a2795e4533b4091d77c738d14
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a249e1b89ca25e1c34bdf96154e3f6224a91a9af
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b9a66f23612b84617e04412169e155a4b92f632d
    Patch