Resource exhaustion in Linux Kernel
CVE-2021-3764
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.
Vulnerability class: DoS (Denial of Service)
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: 0.003 (17.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Linux Kernel — versions 5.15
- Linux Kernel — versions Fixed in v5.15-rc4
Weakness classification (CWE)
References
- github.com/torvalds/linux/commit/505d9dcb0f7ddf9d075e729523a33d38642ae680 (Patch, Third Party Advisory)
- security-tracker.debian.org/tracker/CVE-2021-3764 (Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- access.redhat.com/security/cve/CVE-2021-3764 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3764?
- CVE-2021-3764 is a medium-severity vulnerability in Linux Kernel, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2022-08-23.
- How severe is CVE-2021-3764?
- Medium severity. CVSS v3 base score is 5.5 out of 10.