HOMEVULNERABILITIESCVE-2022-4744
HIGH

CVE-2022-4744

CWE-460Published: March 30, 2023· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.

NVD Source

Technical Analysis

CVE-2022-4744 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product(s)
linux kernel
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.html
ADVISORYhttps://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e
ADVISORYhttps://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20230526-0009/
ADVISORYhttp://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.html
ADVISORYhttps://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e
ADVISORYhttps://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20230526-0009/

All References (8)

→
http://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.htmlThird Party Advisory · VDB Entry
→
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703eVendor Advisory
→
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230526-0009/Third Party Advisory
→
http://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.htmlThird Party Advisory · VDB Entry
→
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703eVendor Advisory
→
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230526-0009/Third Party Advisory

Quick Facts

CVE IDCVE-2022-4744
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-460
CISA KEVNo
Affected1 vendor(s)
PublishedMar 30, 2023

Related CVEs (CWE-460)

CVE-2022-22150
8.8
CVE-2026-40583
8.2
CVE-2025-30157
7.5
CVE-2024-0316
7.5
CVE-2024-20354
7.4
CVE-2021-34716
7.2

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-4744 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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