Out-of-bounds Read in Linux Kernel
CVE-2021-3600
It was discovered that the eBPF implementation in the Linux kernel did not properly track bounds information for 32 bit registers when performing div and mod operations. A local attacker could use this to possibly execute arbitrary code.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.6% 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 5.11
- The Linux Kernel Organization — versions 0
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Fedoraproject Fedora — versions 34
- Red Hat Enterprise Linux — versions 8.0
Weakness classification (CWE)
References
- cve.mitre.org/cgi-bin/cvename.cgi (issue-tracking, Product)
- ubuntu.com/security/notices/USN-5003-1 (Third Party Advisory, third-party-advisory)
- git.kernel.org/linus/e88b2c6e5a4d9ce30d75391e4d950da74bb2bd90 (issue-tracking, Patch, Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3600?
- CVE-2021-3600 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2024-01-08.
- How severe is CVE-2021-3600?
- High severity. CVSS v3 base score is 7.8 out of 10.