CVE-2022-50097

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2022-50097
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50097.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-50097
Downstream
Related
Published
2025-06-18T11:02:34.589Z
Modified
2026-04-03T13:14:36.138492291Z
Summary
video: fbdev: s3fb: Check the size of screen before memset_io()
Details

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

video: fbdev: s3fb: Check the size of screen before memset_io()

In the function s3fbsetpar(), the value of 'screensize' is calculated by the user input. If the user provides the improper value, the value of 'screensize' 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: errorcode(0x0002) - not-present page [ 54.083760] RIP: 0010:memsetorig+0x33/0xb0 [ 54.083782] Call Trace: [ 54.083788] s3fbsetpar+0x1ec6/0x4040 [ 54.083806] fbsetvar+0x604/0xeb0 [ 54.083836] dofbioctl+0x234/0x670

Fix the this by checking the value of 'screensize' before memsetio().

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50097.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
a268422de8bf1b4c0cb97987b6c329c9f6a3da4b
Fixed
574912261528589012b61f82d368256247c3a5a8
Fixed
3c35a0dc2b4e7acf24c796043b64fa3eee799239
Fixed
eacb50f1733660911827d7c3720f4c5425d0cdda
Fixed
5e0da18956d38e7106664dc1d06367b22f06edd3
Fixed
ce50d94afcb8690813c5522f24cd38737657db81
Fixed
52461d387cc8c8f8dc40320caa2e9e101f73e7ba
Fixed
e2d7cacc6a2a1d77e7e20a492daf458a12cf19e0
Fixed
6ba592fa014f21f35a8ee8da4ca7b95a018f13e8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50097.json"