What’s Vulnerable › Vulnerabilities
CVE-2021-3744
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2022-03-04 · updated 2026-06-17
- Weakness: CWE-401
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.
Affected products
- Debian Linux: 9.0, 10.0
- Fedoraproject Fedora: 33, 34, 35
- Linux kernel: before 5.15; 5.15, 5.15-rc1, 5.15-rc2, 5.15-rc3 — fixed in 5.15
- Oracle Communications Cloud Native Core Binding Support Function: 22.1.3
- Oracle Communications Cloud Native Core Network Exposure Function: 22.1.1
- Oracle Communications Cloud Native Core Policy: 22.2.0
- Red Hat build of Quarkus: 2.0
- RedHat Codeready Linux Builder: 8.0
- RedHat Codeready Linux Builder Eus: 8.6
- RedHat Codeready Linux Builder For Power Little Endian: 8.0
- RedHat Codeready Linux Builder For Power Little Endian Eus: 8.6
- RedHat Developer Tools: 1.0
- RedHat Enterprise Linux Eus: 8.6
- RedHat Enterprise Linux For Ibm Z Systems Eus: 8.6
- RedHat Enterprise Linux For Power Little Endian Eus: 8.6
- RedHat Enterprise Linux For Real Time: 8, 8.6
- RedHat Enterprise Linux For Real Time For Nfv: 8
- RedHat Enterprise Linux For Real Time For Nfv Tus: 8.6
- RedHat Enterprise Linux Server Eus: 8.6
- RedHat Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions: 8.6
- RedHat Enterprise Linux Server Tus: 8.6
- RedHat Enterprise Linux Server Update Services For Sap Solutions: 8.6
- RedHat Virtualization Host: 4.0
How to fix
Upgrade to a fixed version: Linux kernel 5.15. Check the vendor advisory for mitigations.
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
- http://www.openwall.com/lists/oss-security/2021/09/14/1
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