CVE-2021-3744

CVE-2021-3744 is a medium-severity vulnerability in Redhat Build Of Quarkus with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-401.

Key facts

• Severity: Medium (CVSS 3.x base score 5.5)
• CVSS v2: 2.1
• EPSS exploit prediction: 1% (41st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-401
• Affected product: Redhat Build Of Quarkus
• Published: 2022-03-04
• Last modified: 2026-06-17

Description

A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackers to cause a denial of service (memory consumption). This vulnerability is similar with the older CVE-2019-18808.

Frequently asked questions

What is CVE-2021-3744?

A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackers to cause a denial of service (memory consumption). This vulnerability is similar with the older CVE-2019-18808.

How severe is CVE-2021-3744?

CVE-2021-3744 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-3744 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3744?

CVE-2021-3744 primarily affects Redhat Build Of Quarkus. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-3744?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-3744 published?

CVE-2021-3744 was published on 2022-03-04 and last updated on 2026-06-17.

References

• http://www.openwall.com/lists/oss-security/2021/09/14/1
• https://bugzilla.redhat.com/show_bug.cgi?id=2000627
• https://github.com/torvalds/linux/commit/505d9dcb0f7ddf9d075e729523a33d38642ae680
• https://kernel.googlesource.com/pub/scm/linux/kernel/git/herbert/crypto-2.6/+/505d9dcb0f7ddf9d075e729523a33d38642ae680%5E%21/#F0
• https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7BLLVKYAIETEORUPTFO3TR3C33ZPFXQM/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LAT3RERO6QBKSPJBNNRWY3D4NCGTFOS7/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SYKURLXBB2555ASWMPDNMBUPD6AG2JKQ/
• https://seclists.org/oss-sec/2021/q3/164
• https://www.debian.org/security/2022/dsa-5096
• https://www.oracle.com/security-alerts/cpujul2022.html

Affected products (31)

• cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:build_of_quarkus:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:codeready_linux_builder:8.0:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:codeready_linux_builder_eus:8.6:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:8.0:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_for_real_time:8.6:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:8:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.6:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server_eus:8.6:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*

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