VULNERABILITY INTELLIGENCE

CVE-2020-10766

CVSS score5.5 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2020-09-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Description

A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality.

Weakness classification

  • secalert@redhat.com: CWE-440
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references