Vulnerability in Linux Kernel
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (45.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel — versions 5.15
- Oracle Communications Cloud Native Core Binding Support Function — versions 22.1.3
- Oracle Communications Cloud Native Core Network Exposure Function — versions 22.1.1
- Oracle Communications Cloud Native Core Policy — versions 22.2.0
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 33, 34, 35
- Red Hat Build Of Quarkus — versions 2.0
- Red Hat Codeready Linux Builder — versions 8.0
- Red Hat Codeready Linux Builder Eus — versions 8.6
- Red Hat Codeready Linux Builder For Power Little Endian — versions 8.0
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2021/09/14/1 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- seclists.org/oss-sec/2021/q3/164 (Exploit, Patch, Mailing List, Third Party Advisory)
- kernel.googlesource.com/pub/scm/linux/kernel/git/herbert/crypto-2.6/+/505d9dcb0… (Patch, Mailing List, Third Party Advisory)
- github.com/torvalds/linux/commit/505d9dcb0f7ddf9d075e729523a33d38642ae680 (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/03/msg00012.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2022/dsa-5096 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3744?
- CVE-2021-3744 is a medium-severity vulnerability in Linux Kernel, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2022-03-04.
- How severe is CVE-2021-3744?
- Medium severity. CVSS v3 base score is 5.5 out of 10.