CVE-2021-3600: canonical ubuntu_linux Out-of-bounds Read
Vulnerability summary
CVE-2021-3600 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20.7% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 1Timeline
- 08-01-2024PublishedVulnerability first disclosed.
- 04-09-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.28% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu49 products
- linux< 4.15.0-147.151 | < 5.4.0-70.78
- linux-aws< 4.15.0-1106.113 | < 5.4.0-1041.43
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.4< 5.4.0-1041.43~18.04.1
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04
Debian1 product
- linux< 5.10.19-1
Fedoraproject1 product
- fedoraEOL34
Linux1 product
- linux_kernel≥ 4.14.115, < 4.14.308 | ≥ 4.15, < 4.19.206 | ≥ 4.20, < 5.4.98 | ≥ 5.5, < 5.10.16 | 5.11:rc1 | 5.11:rc2 | 5.11:rc3 | 5.11:rc4 | 5.11:rc5 | 5.11:rc6 | 5.11:rc7
Redhat1 product
The linux kernel organization1 product
- linux< 5.11
7 vendors · 55 products
References
6 links- git.kernel.org/linus/e88b2c6e5a4d9ce30d75391e4d950da74bb2bd90Issue TrackingREPORTMailing ListPatchVendor Advisory
