CVE-2021-3753

Public Exploit

Description

A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.01%
Third-Party Advisory redhat.com Third-Party Advisory github.com Third-Party Advisory netapp.com Third-Party Advisory openwall.com
Affected: n/a kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1999589 patch third party advisory issue tracking
https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107c7 third party advisory patch
https://www.openwall.com/lists/oss-security/2021/09/01/4 patch mailing list exploit third party advisory
https://security.netapp.com/advisory/ntap-20221028-0003/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-3753?
CVE-2021-3753 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3753?
To fix CVE-2021-3753, 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-2021-3753 being actively exploited in the wild?
It is possible that CVE-2021-3753 is being exploited or will be exploited in a near future based on public information. 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-2021-3753?
CVE-2021-3753 affects n/a kernel.
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