CVE-2021-33656
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-33656
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33656.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-33656
- Downstream
- Related
- Published
- 2022-07-18T15:15:08Z
- Modified
- 2025-08-09T19:01:27Z
- Severity
-
- 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
- References
-
- http://www.openwall.com/lists/oss-security/2022/07/19/3
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patch
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernel