What’s Vulnerable › Vulnerabilities

CVE-2021-3764

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% 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-400

Description

A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an attacker to cause a denial of service. The vulnerability is similar to the older CVE-2019-18808. The highest threat from this vulnerability is to system availability.

Affected products

• Linux kernel: through 5.14.20; 5.15, 5.15-rc1, 5.15-rc2, 5.15-rc3

References

• https://access.redhat.com/security/cve/CVE-2021-3764
• https://bugzilla.redhat.com/show_bug.cgi?id=1997467
• https://github.com/torvalds/linux/commit/505d9dcb0f7ddf9d075e729523a33d38642ae680
• https://security-tracker.debian.org/tracker/CVE-2021-3764
• https://access.redhat.com/security/cve/CVE-2021-3764
• https://bugzilla.redhat.com/show_bug.cgi?id=1997467
• https://github.com/torvalds/linux/commit/505d9dcb0f7ddf9d075e729523a33d38642ae680
• https://security-tracker.debian.org/tracker/CVE-2021-3764

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