CVE-2021-3600

HIGH
7.8
CVSS Score
Published: January 8, 2024 at 06:16 PM UTC
Updated: June 17, 2026 at 04:05 AM UTC
5 products affected across 5 vendorsLinux KernelFedoraUbuntu Linux

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.14.115 ≤ v < 4.14.3084.15 ≤ v < 4.19.2064.20 ≤ v < 5.4.985.5 ≤ v < 5.10.165.11 rc15.11 rc25.11 rc35.11 rc45.11 rc55.11 rc65.11 rc7
Affected range stops below 4.14.308, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.206, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.98, so it looks safe — our inference, not a vendor statement
v < 5.11
Affected range stops below 5.11, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHcanonical
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125CWE-787

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