Buffer overflow in Linux Kernel
CVE-2021-4204
An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- access.redhat.com/security/cve/CVE-2021-4204 (Third Party Advisory, Mitigation)
- www.openwall.com/lists/oss-security/2022/01/11/4 (Patch, Mailing List, Third Party Advisory)
- security-tracker.debian.org/tracker/CVE-2021-4204 (Third Party Advisory)
- security.netapp.com/advisory/ntap-20221228-0003/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-4204?
- CVE-2021-4204 is a high-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 7.1/10. Published 2022-08-24.
- How severe is CVE-2021-4204?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2021-4204 known to be exploited?
- 31 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.