What’s Vulnerable › Vulnerabilities

CVE-2021-3714

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-08-23 · updated 2026-06-17
• Weakness: CWE-200

Description

A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.

Affected products

• Linux kernel: all versions
• Red Hat Enterprise Linux: 6.0, 7.0, 8.0

References

• https://access.redhat.com/security/cve/CVE-2021-3714
• https://arxiv.org/abs/2111.08553
• https://arxiv.org/pdf/2111.08553.pdf
• https://bugzilla.redhat.com/show_bug.cgi?id=1931327
• https://access.redhat.com/security/cve/CVE-2021-3714
• https://arxiv.org/abs/2111.08553
• https://arxiv.org/pdf/2111.08553.pdf
• https://bugzilla.redhat.com/show_bug.cgi?id=1931327

Get alerted when CVE-2021-3714 or the next vulnerability affects your stack