CVE-2022-50097video: fbdev: s3fb: Check the size of screen before memset_io()
- 7.1HighCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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().
Timeline
ID reserved
By Linux
Published
- 14 months later
· 14 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected a268422de8bf1b4c0cb97987b6c329c9f6a3da4b – < 574912261528589012b61f82d368256247c3a5a8
- affected a268422de8bf1b4c0cb97987b6c329c9f6a3da4b – < 3c35a0dc2b4e7acf24c796043b64fa3eee799239
- affected a268422de8bf1b4c0cb97987b6c329c9f6a3da4b – < eacb50f1733660911827d7c3720f4c5425d0cdda
- affected a268422de8bf1b4c0cb97987b6c329c9f6a3da4b – < 5e0da18956d38e7106664dc1d06367b22f06edd3
- affected a268422de8bf1b4c0cb97987b6c329c9f6a3da4b – < ce50d94afcb8690813c5522f24cd38737657db81
- affected a268422de8bf1b4c0cb97987b6c329c9f6a3da4b – < 52461d387cc8c8f8dc40320caa2e9e101f73e7ba
- affected a268422de8bf1b4c0cb97987b6c329c9f6a3da4b – < e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0
- affected a268422de8bf1b4c0cb97987b6c329c9f6a3da4b – < 6ba592fa014f21f35a8ee8da4ca7b95a018f13e8
- affected 2.6.21
- unaffected < 2.6.21
- unaffected 4.14.291 – ≤ 4.14.*
- unaffected 4.19.256 – ≤ 4.19.*
- unaffected 5.4.211 – ≤ 5.4.*
- unaffected 5.10.137 – ≤ 5.10.*
- unaffected 5.15.61 – ≤ 5.15.*
- unaffected 5.18.18 – ≤ 5.18.*
- unaffected 5.19.2 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References
References8
- https://git.kernel.org/stable/c/574912261528589012b61f82d368256247c3a5a8 (opens in a new tab)
- https://git.kernel.org/stable/c/3c35a0dc2b4e7acf24c796043b64fa3eee799239 (opens in a new tab)
- https://git.kernel.org/stable/c/eacb50f1733660911827d7c3720f4c5425d0cdda (opens in a new tab)
- https://git.kernel.org/stable/c/5e0da18956d38e7106664dc1d06367b22f06edd3 (opens in a new tab)
- https://git.kernel.org/stable/c/ce50d94afcb8690813c5522f24cd38737657db81 (opens in a new tab)
- https://git.kernel.org/stable/c/52461d387cc8c8f8dc40320caa2e9e101f73e7ba (opens in a new tab)
- https://git.kernel.org/stable/c/e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0 (opens in a new tab)
- https://git.kernel.org/stable/c/6ba592fa014f21f35a8ee8da4ca7b95a018f13e8 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-55363 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-50097)Record last updated .