CVE-2021-33655

Description

When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory debian.org Vendor Advisory kernel.org
Affected: n/a kernel
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4 patch vendor advisory mailing list
http://www.openwall.com/lists/oss-security/2022/07/19/2 patch mailing list third party advisory
https://www.debian.org/security/2022/dsa-5191 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-33655?
CVE-2021-33655 has been scored as a medium severity vulnerability.
How to fix CVE-2021-33655?
To fix CVE-2021-33655, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33655 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-33655 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-33655?
CVE-2021-33655 affects n/a kernel.
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