CVE-2021-22600
Exploited in the Wild
✓ Confirmed 0-Day
★ Google Project Zero
Triaged: March 5, 2026
2 articles
EPSS Score
Source: FIRST.org · 2026-05-24
0.18%
probability
This CVE has a 0.18% probability
of being exploited in the next 30 days.
0%
Top 39.0th percentile of all CVEs
100%
CVSS score unavailable
Neither CIRCL nor NVD returned a CVSS score for this CVE.
View on VulnerabilityLookup ↗
Description
Project ZeroDouble free in packet_set_ring
Attack Intelligence
CWE-118
· Incorrect Access of Indexable Resource ('Range Error')
CWE-119
· Buffer Overflow
CWE-1341
· Multiple Releases of Same Resource or Handle
CWE-415
· Double Free
CWE-573
· Improper Following of Specification by Caller
CWE-664
· Improper Control of a Resource Through its Lifetime
CWE-666
· Operation on Resource in Wrong Phase of Lifetime
CWE-672
· Operation on a Resource after Expiration or Release
CWE-675
· Multiple Operations on Resource in Single-Operation Context
CWE-710
· Improper Adherence to Coding Standards
CWE-825
· Expired Pointer Dereference
Google Project Zero
Patched
March 7, 2022
Reported by
???
Root Cause Analysis
???
Exploits & PoC
sendINUX/CVE-2021-22600__DirtyPagetable
PoC CVE-2021-22600 — sendINUX/CVE-2021-22600__DirtyPagetable
1
Chinmay1743/af_packet.c
Proof-Of-Concept to check privileges of af_packet.c for validating the privileges acquired by any hacker upon successful exploitation of CVE-2021-2260
1
2 repos — triés par ⭐
Rechercher sur GitHub ↗
Google almost doubles Linux Kernel, Kubernetes zero-day rewards
BleepingComputer
Feb 15, 2022
Signal Intelligence
Confidence
95%
EPSS
0.18%
Mentions
2
Last Seen
Feb 15, 2022
CNA Information
Analyst Note
Auto-imported from Google Project Zero — confirmed zero-day by definition.
Triage Info
Decided atMar 05, 2026