What is CVE-2021-3753?

CVE-2021-3753 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a Out-of-bounds Read flaw (CWE-125). CVE-2021-3753 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-3753?

CVE-2021-3753 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Is there a patch available for CVE-2021-3753?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-3753 patch availability.

Is CVE-2021-3753 actively exploited?

CVE-2021-3753 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2021-3753

Medium

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.

Package Linux Kernel

Published 2022-02-16

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Vector string

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness type

CWE-125

CVE-2021-3753 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

4 total

Openwall
https://www.openwall.com/lists/oss-security/2021/09/01/4

Exploit Mailing List Patch Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1999589

Issue Tracking Patch Third Party Advisory
GitHub
https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107c7

Patch Third Party Advisory
Security
https://security.netapp.com/advisory/ntap-20221028-0003/

Third Party Advisory

Details

CVE ID CVE-2021-3753

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2022-02-16

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-3753?

CVE-2021-3753 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . CVE-2021-3753 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-3753?

CVE-2021-3753 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
Is there a patch available for CVE-2021-3753?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-3753 patch availability.
Is CVE-2021-3753 actively exploited?

No. CVE-2021-3753 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.