CVE-2021-33656

CVE-2021-33656

EPSS 0.5%CWE-787

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

18 Jul 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

Affected products

n/a · openEuler:kernel

References

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 http://www.openwall.com/lists/oss-security/2022/07/19/3