CVE-20XX-?
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CVE-2021-22600

6.6 MEDIUM 7% exploit odds exploited in the wild Fix listed Memory safety Network gear

What it is

A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

At a glance

Exploitability
Can be exploited locally on the machine with a low-privilege account, but needs a user to act. High risk of service disruption.
In the wild
CISA lists this as exploited in real attacks. Treat as urgent.
Fix
A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

  1. ReservedThe CVE id was reserved by its CNA
  2. PublishedDisclosed publicly on CVE.org and NVD
  3. 2022-04-11 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
  4. 2022-05-02 Remediation deadlineCISA's due date for federal agencies to fix it
  5. Last updatedMost recent change to the record

Why it ranks here

Details

Published
Last modified
Added to CISA KEV
2022-04-11
Exploit probability
6.6% · EPSS, next 30 days
Weakness
CWE-415
Record status
Analyzed

Affected

Attack profile CVSS 3.1 · 6.6

Attack vector
Local
Complexity
High
Privileges needed
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
High
Raw vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-22600.md and follow it. Check whether this project is affected by CVE-2021-22600. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record