7.8

CVE-2022-50097: video: fbdev: s3fb: Check the size of screen before memset_io()

Modified
AliasesUBUNTU-CVE-2022-50097DEBIAN-CVE-2022-50097
Published 18-06-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-50097 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, 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 (NVD)
EPSS score
0.20%
0%100%
Low · 0.00 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: s3fb: Check the size of screen before memset_io() In the function s3fb_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: [ 54.083733] BUG: unable to handle page fault for address: ffffc90003000000 [ 54.083742] #PF: supervisor write access in kernel mode [ 54.083744] #PF: error_code(0x0002) - not-present page [ 54.083760] RIP: 0010:memset_orig+0x33/0xb0 [ 54.083782] Call Trace: [ 54.083788] s3fb_set_par+0x1ec6/0x4040 [ 54.083806] fb_set_var+0x604/0xeb0 [ 54.083836] do_fb_ioctl+0x234/0x670 Fix the this by checking the value of 'screen_size' before memset_io().

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.20% 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≥ a268422de8bf1b4c0cb97987b6c329c9f6a3da4b, < 574912261528589012b61f82d368256247c3a5a8 | ≥ a268422de8bf1b4c0cb97987b6c329c9f6a3da4b, < 3c35a0dc2b4e7acf24c796043b64fa3eee799239 | ≥ a268422de8bf1b4c0cb97987b6c329c9f6a3da4b, < eacb50f1733660911827d7c3720f4c5425d0cdda | ≥ a268422de8bf1b4c0cb97987b6c329c9f6a3da4b, < 5e0da18956d38e7106664dc1d06367b22f06edd3 | ≥ a268422de8bf1b4c0cb97987b6c329c9f6a3da4b, < ce50d94afcb8690813c5522f24cd38737657db81 | ≥ a268422de8bf1b4c0cb97987b6c329c9f6a3da4b, < 52461d387cc8c8f8dc40320caa2e9e101f73e7ba | ≥ a268422de8bf1b4c0cb97987b6c329c9f6a3da4b, < e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0 | ≥ a268422de8bf1b4c0cb97987b6c329c9f6a3da4b, < 6ba592fa014f21f35a8ee8da4ca7b95a018f13e8 | 2.6.21
  • linux_kernel≥ 2.6.21, < 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