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As of 11/07/2026, Linux kernel recorded 0 security vulnerabilities in the last 90 days, of which 0 are rated High or Critical. None of these vulnerabilities is actively exploited (KEV) according to CISA's catalog. CyStack recommends that organizations and individual users apply patches as soon as possible.
CyStack does not yet have sufficient official-source data to identify the latest version of Linux kernel and determine which vulnerabilities affect that version.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the organization.
CVE-2021-3493CVE-2021-3493CVE-2021-3492Ubuntu linux kernel shiftfs file system double free vulnerabilityCVE-2019-15794Reference counting error in overlayfs/shiftfs error path when used in conjuction with aufs| Vulnerability | Exploitation status | Fix | Published | Severity |
|---|---|---|---|---|
CVE-2021-3493CVE-2021-3493 | Exploitation statusKEV | FixYes | Published04/17/2021 | SeverityHigh |
CVE-2021-3492Ubuntu linux kernel shiftfs file system double free vulnerability | Exploitation statusNot confirmed | FixYes | Published04/17/2021 | SeverityHigh |
CVE-2019-15794Reference counting error in overlayfs/shiftfs error path when used in conjuction with aufs | Exploitation statusNot confirmed | FixYes | Published04/23/2020 | SeverityHigh |
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