CVE-2022-50102· NVD / CVE Program· CNA Linux

video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock()

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.18% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 0288fa799e273b08839037499d704dc7bdc13e9a, 15661642511b2b192077684a89f42a8d95d54286, 236c1502520b7b08955467ec2e50b3232e34f1f9.

Low priority for now. Upgrade to Linux Linux 0288fa799e273b08839037499d704dc7bdc13e9a, 15661642511b2b192077684a89f42a8d95d54286, 236c1502520b7b08955467ec2e50b3232e34f1f9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available

Denial of service

BDU:2026-02811

Published: Jun 18, 2025
Updated: Jun 17, 2026
EPSS: 0.2% · 8th percentile
CWE: CWE-369

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel2.6.22 and later · before 4.14.291
linux linux kernel4.15 and later · before 4.19.256
linux linux kernel4.20 and later · before 5.4.211
linux linux kernel5.5 and later · before 5.10.137
linux linux kernel5.11 and later · before 5.15.61
linux linux kernel5.16 and later · before 5.18.18
linux linux kernel5.19 and later · before 5.19.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 2.6.22affected
- 681e14730c73cc2c71af282c001de6bc71c22f00 and later · before 76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7affected · git
- 681e14730c73cc2c71af282c001de6bc71c22f00 and later · before b9a66f23612b84617e04412169e155a4b92f632daffected · git
- 681e14730c73cc2c71af282c001de6bc71c22f00 and later · before a249e1b89ca25e1c34bdf96154e3f6224a91a9afaffected · git
- 681e14730c73cc2c71af282c001de6bc71c22f00 and later · before 0288fa799e273b08839037499d704dc7bdc13e9aaffected · git
- 681e14730c73cc2c71af282c001de6bc71c22f00 and later · before 236c1502520b7b08955467ec2e50b3232e34f1f9affected · git
- 681e14730c73cc2c71af282c001de6bc71c22f00 and later · before 9ebc5031958c1f3a2795e4533b4091d77c738d14affected · git
- 681e14730c73cc2c71af282c001de6bc71c22f00 and later · before 15661642511b2b192077684a89f42a8d95d54286affected · git
- 681e14730c73cc2c71af282c001de6bc71c22f00 and later · before 2f1c4523f7a3aaabe7e53d3ebd378292947e95c8affected · git
- before 2.6.22not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 6.0.2-1	6.0.2-1

Same product

linux: all records

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Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	0288fa799e273b08839037499d704dc7bdc13e9a	Vendor (CNA)
Linux Linux	15661642511b2b192077684a89f42a8d95d54286	Vendor (CNA)
Linux Linux	236c1502520b7b08955467ec2e50b3232e34f1f9	Vendor (CNA)
Linux Linux	2f1c4523f7a3aaabe7e53d3ebd378292947e95c8	Vendor (CNA)
Linux Linux	76b3f0a0b56e53a960a14624a0f48b3d94b5e7e7	Vendor (CNA)
Linux Linux	9ebc5031958c1f3a2795e4533b4091d77c738d14	Vendor (CNA)
Linux Linux	a249e1b89ca25e1c34bdf96154e3f6224a91a9af	Vendor (CNA)
Linux Linux	b9a66f23612b84617e04412169e155a4b92f632d	Vendor (CNA)
debian:linux	6.0.2-1 · Debian:12	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2024-26945413 days apartcrypto: iaa - Fix nr_cpus < nr_iaa case
33Monitor
CVE-2022-499780 days apartfbdev: fb_pm2fb: Avoid potential divide by zero error
22Monitor
CVE-2022-500100 days apartvideo: fbdev: i740fb: Check the argument of i740_calc_vclk()
22Monitor
CVE-2022-501780 days apartwifi: rtw89: 8852a: rfk: fix div 0 exception
22Monitor
CVE-2025-3812615 days apartnet: stmmac: make sure that ptp_rate is not 0 before configuring timestamping
22Monitor
CVE-2025-3820516 days apartdrm/amd/display: Avoid divide by zero by initializing dummy pitch to 1
22Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-369 · Divide By Zero

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

For records you follow, these changes also arrive as notifications. →

References

git.kernel.org/stable/c/0288fa799e273b08839037499d704dc7bdc13e9a

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records