What is CVE-2021-3501?

CVE-2021-3501 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2021-05-06.

How severe is CVE-2021-3501?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Linux Kernel

CVE-2021-3501

A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (30.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
secalert@redhat.com (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)
secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-3501?: CVE-2021-3501 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2021-05-06.
How severe is CVE-2021-3501?: High severity. CVSS v3 base score is 7.1 out of 10.