7.8

CVE-2022-50099: video: fbdev: arkfb: Check the size of screen before memset_io()

Modified
AliasesUBUNTU-CVE-2022-50099DEBIAN-CVE-2022-50099
Published 18-06-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-50099 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 7
SUSE-SU-2025:02264-1SUSE-SU-2025:02308-1SUSE-SU-2025:02320-1SUSE-SU-2025:02321-1SUSE-SU-2025:02322-1SUSE-SU-2025:02334-1

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

18%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.25% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu111 products
  • linuxAll versions (No fix recorded) | < 4.15.0-197.208 | < 5.4.0-132.148 | < 5.15.0-53.59
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1143.155 | < 5.4.0-1089.97 | < 5.15.0-1023.27
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 681e14730c73cc2c71af282c001de6bc71c22f00, < 4a20c5510aa2c031a096a58deb356e91609781c9 | ≥ 681e14730c73cc2c71af282c001de6bc71c22f00, < 352305ea50d682b8e081d826da53caf9e744d7d0 | ≥ 681e14730c73cc2c71af282c001de6bc71c22f00, < 53198b81930e567ad6b879812d88052a1e8ac79e | ≥ 681e14730c73cc2c71af282c001de6bc71c22f00, < 09e733d6ac948e6fda4b16252e44ea46f98fc8b4 | ≥ 681e14730c73cc2c71af282c001de6bc71c22f00, < 0701df594bc1d7ae55fed407fb65dd90a93f8a9c | ≥ 681e14730c73cc2c71af282c001de6bc71c22f00, < 8bcb1a06e3091716b7cbebe0e91d1de9895068cd | ≥ 681e14730c73cc2c71af282c001de6bc71c22f00, < 2ce61c39c2a0b8ec82f48e0f7136f0dac105ae75 | ≥ 681e14730c73cc2c71af282c001de6bc71c22f00, < 96b550971c65d54d64728d8ba973487878a06454 | 2.6.22
  • linux_kernel≥ 2.6.22, < 4.14.291 | ≥ 4.15, < 4.19.256 | ≥ 4.20, < 5.4.211 | ≥ 5.5, < 5.10.137 | ≥ 5.11, < 5.15.61 | ≥ 5.16, < 5.18.18 | ≥ 5.19, < 5.19.2
Debian1 product
  • linux< 6.0.2-1

3 vendors · 114 products

References

11 links
Show all 11 references