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CVE-2022-4744

Good to know:

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Date: March 29, 2023

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.

Language: C

Severity Score

Related Resources (9)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2022-4744
https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
https://security.netapp.com/advisory/ntap-20230526-0009/
https://github.com/gregkh/linux/commit/158b515f703e75e7d68289bf4d98c664e1d632df
https://access.redhat.com/security/cve/CVE-2022-4744
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e
http://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.html
https://nvd.nist.gov/vuln/detail/CVE-2022-4744
https://www.mend.io/vulnerability-database/CVE-2022-4744

Severity Score

Weakness Type (CWE)

Double Free

CWE-415

Improper Cleanup on Thrown Exception

CWE-460

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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