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)
EPSS: 0.011 (62.1th percentile) — read the EPSS interpretation.
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.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Third Party Advisory, Mitigation)
- secalert@redhat.com (Patch, Mailing List, Third Party Advisory)
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (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.