vulnerability
Arch Linux: Out-of-bounds Write (CVE-2021-33655)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:M/C:C/I:C/A:C) | Jul 18, 2022 | Jul 11, 2025 | Nov 27, 2025 |
Severity
6
CVSS
(AV:L/AC:L/Au:M/C:C/I:C/A:C)
Published
Jul 18, 2022
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-33655
- https://attackerkb.com/topics/CVE-2021-33655
- URL-http://www.openwall.com/lists/oss-security/2022/07/19/2
- URL-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4
- URL-https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- URL-https://www.debian.org/security/2022/dsa-5191
- CWE-787
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