DEBIAN-CVE-2022-39842
- Source
- https://security-tracker.debian.org/tracker/CVE-2022-39842
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-39842.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2022-39842
- Upstream
- Downstream
- Published
- 2022-09-05T07:15:08Z
- Modified
- 2026-09-01T16:05:26Z
- 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 pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen.
- References
Affected packages
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source&distro=bookworm
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source&distro=trixie
Debian:14 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source&distro=forky