CVE-2022-39842
- Source
- https://cve.org/CVERecord?id=CVE-2022-39842
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-39842.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-39842
- Aliases
-
- A-245928838
- ASB-A-245928838
- Downstream
- Related
- Published
- 2022-09-05T07:15:08.170Z
- Modified
- 2026-03-14T15:00:11.197914Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
- Summary
- [none]
- Details
-
An issue was discovered in the Linux kernel before 5.19. In pxa3xxgcuwrite in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of sizet versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copyfrom_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen.
- References
-
- https://lore.kernel.org/all/YylaC1wHHyLw22D3%40kadam/T/
- https://www.debian.org/security/2022/dsa-5257
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
- https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-39842.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.19"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.19-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.19-rc2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.19-rc3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "10.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "10.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "11.0"
}
]
}
]