CVE-2022-50099

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-06-18. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

video: fbdev: arkfb: Check the size of screen before memset_io()

In the function arkfb_set_par(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screen_size' may larger than 'info->screen_size', which may cause the following bug:

[ 659.399066] BUG: unable to handle page fault for address: ffffc90003000000 [ 659.399077] #PF: supervisor write access in kernel mode [ 659.399079] #PF: error_code(0x0002) - not-present page [ 659.399094] RIP: 0010:memset_orig+0x33/0xb0 [ 659.399116] Call Trace: [ 659.399122] arkfb_set_par+0x143f/0x24c0 [ 659.399130] fb_set_var+0x604/0xeb0 [ 659.399161] do_fb_ioctl+0x234/0x670 [ 659.399189] fb_ioctl+0xdd/0x130

Fix the this by checking the value of 'screen_size' before memset_io().

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

June 18, 2025

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

video: fbdev: arkfb: Check the size of screen before memset_io() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/96b550971c65d54d64728d8ba973487878a06454
generic

video: fbdev: arkfb: Check the size of screen before memset_io() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8bcb1a06e3091716b7cbebe0e91d1de9895068cd
generic

video: fbdev: arkfb: Check the size of screen before memset_io() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/53198b81930e567ad6b879812d88052a1e8ac79e
generic

video: fbdev: arkfb: Check the size of screen before memset_io() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4a20c5510aa2c031a096a58deb356e91609781c9
generic

video: fbdev: arkfb: Check the size of screen before memset_io() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/352305ea50d682b8e081d826da53caf9e744d7d0
generic

video: fbdev: arkfb: Check the size of screen before memset_io() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2ce61c39c2a0b8ec82f48e0f7136f0dac105ae75
generic

video: fbdev: arkfb: Check the size of screen before memset_io() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/09e733d6ac948e6fda4b16252e44ea46f98fc8b4
generic

video: fbdev: arkfb: Check the size of screen before memset_io() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0701df594bc1d7ae55fed407fb65dd90a93f8a9c

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.14.291—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Data Freshness Timeline

(refreshed 13× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 117 total refreshes for this CVE.

  1. 2026-08-07 16:24 UTCEPSS rescore
  2. 2026-08-06 13:44 UTCEPSS rescore
  3. 2026-08-05 19:15 UTCEPSS rescore
  4. 2026-08-05 09:22 UTCEG score recompute
  5. 2026-08-05 09:22 UTCGHSA enrichment
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  22. 2026-07-24 02:41 UTCOSV refresh
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  25. 2026-07-23 02:16 UTCEG score recompute
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  1. 2026-07-22 23:04 UTCEG score recompute
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  28. 2026-07-06 22:04 UTCOSV refresh
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Frequently asked(5)

What is CVE-2022-50099?
CVE-2022-50099 is a high vulnerability published on June 18, 2025. In the Linux kernel, the following vulnerability has been resolved: video: fbdev: arkfb: Check the size of screen before memset_io() In the function arkfbsetpar(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screensize' may…
When was CVE-2022-50099 disclosed?
CVE-2022-50099 was first published in the National Vulnerability Database on June 18, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-50099 actively exploited?
CVE-2022-50099 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.2% of all scored CVEs.
What is the CVSS score of CVE-2022-50099?
CVE-2022-50099 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-50099?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-50099, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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