What is CVE-2020-10751?

CVE-2020-10751 is a medium-severity vulnerability in Kernel Selinux, classified under CWE-349. CVSS score: 6.1/10. Published 2020-05-26.

How severe is CVE-2020-10751?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2020-10751 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Kernel Selinux

CVE-2020-10751

A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly only validate the first netlink message in the skb and allow or deny the rest of the messages within the skb with the granted permission without further processing.

Published 2020-05-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (25.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Kernel Selinux
The Linux Foundation Kernel — versions before 5.7
Red Hat Enterprise Linux Server — versions 7.0, 8.0

Weakness classification (CWE)

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.openwall.com/lists/oss-security/2020/05/27/3 (mailing-list, Mailing List, Third Party Advisory)
lists.debian.org/debian-lts-announce/2020/06/msg00011.html (mailing-list)
lists.debian.org/debian-lts-announce/2020/06/msg00012.html (mailing-list)
lists.debian.org/debian-lts-announce/2020/06/msg00013.html (mailing-list)
www.debian.org/security/2020/dsa-4698 (vendor-advisory)
www.debian.org/security/2020/dsa-4699 (vendor-advisory)
lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html (vendor-advisory)
usn.ubuntu.com/4389-1/ (vendor-advisory)
usn.ubuntu.com/4390-1/ (vendor-advisory)
usn.ubuntu.com/4391-1/ (vendor-advisory)

Frequently asked questions

What is CVE-2020-10751?: CVE-2020-10751 is a medium-severity vulnerability in Kernel Selinux, classified under CWE-349. CVSS score: 6.1/10. Published 2020-05-26.
How severe is CVE-2020-10751?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-10751 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.