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Medium 6.8Published Jul 18, 2022
CVE-2021-33656When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
Updated under an hour ago ()
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It affects openatom openeuler and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
- CVSS
- 6.8 MEDIUM (v3.1, NVD)CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- openEuler
- NVD analysis
- Modified
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
openatom openeuler openatom:openeuler | 20.03; 20.03; 20.03 | NVD |
linux linux_kernel linux:linux_kernel | before 5.10.127 | NVD |
debian debian_linux debian:debian_linux | 10.0 | NVD |
References
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patchx-refsource-misc
- https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernelx-refsource-misc
- http://www.openwall.com/lists/oss-security/2022/07/19/3mailing-list, x-refsource-mlist
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlmailing-list, x-refsource-mlist
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.