DEBIAN-CVE-2021-3697
- Source
- https://security-tracker.debian.org/tracker/CVE-2021-3697
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3697.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2021-3697
- Upstream
- Published
- 2022-07-06T16:15:08Z
- Modified
- 2026-09-01T20:03:10Z
- Severity
-
- 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
- References
Affected packages
Debian:12 / grub2
Package
- Name
- grub2
- Purl
- pkg:deb/debian/grub2?arch=source&distro=bookworm
Debian:13 / grub2
Package
- Name
- grub2
- Purl
- pkg:deb/debian/grub2?arch=source&distro=trixie
Debian:14 / grub2
Package
- Name
- grub2
- Purl
- pkg:deb/debian/grub2?arch=source&distro=forky