CVE-2020-10751

Original summary

Normalized public record · Updated Nov 3, 2026

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.

Publisher and source text is retained separately from QFinch interpretation.

Affected products

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

1. Confirm the affected product and reachable code path exist in your environment.
2. Apply the vendor-supported patch or mitigation from the primary advisory.
3. Rescan the exact deployed revision and retain verification evidence.

Evidence coverage

SSVC priority

LOW

Confidence

Not available

Aliases

None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

1. [oss-security] 20200527 CVE-2020-10751 - Linux kernel: SELinux netlink permission check bypass ↗
2. [debian-lts-announce] 20200609 [SECURITY] [DLA 2241-1] linux security update ↗
3. [debian-lts-announce] 20200610 [SECURITY] [DLA 2242-1] linux-4.9 security update ↗
4. [debian-lts-announce] 20200610 [SECURITY] [DLA 2241-2] linux security update ↗
5. DSA-4698 ↗
6. DSA-4699 ↗
7. openSUSE-SU-2020:0801 ↗
8. USN-4389-1 ↗
9. USN-4390-1 ↗
10. USN-4391-1 ↗
11. openSUSE-SU-2020:0935 ↗
12. USN-4413-1 ↗

Record history

Published May 26, 2020 · Last refreshed Nov 3, 2026