#VU64668 Use-after-free


Published: 2022-08-25

Vulnerability identifier: #VU64668

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2022-32250

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free incorrect NFT_STATEFUL_EXPR in net/netfilter/nf_tables_api.c in Linux kernel. A local user with ability to create user/net namespaces can execute arbitrary code with root privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: 5.18 - 5.18.1


CPE

External links
http://www.openwall.com/lists/oss-security/2022/05/31/1
http://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/net/netfilter?id=520778042ccca019f3ffa136dd0ca565c486cedd
http://www.openwall.com/lists/oss-security/2022/06/03/1
http://www.openwall.com/lists/oss-security/2022/06/04/1
http://www.debian.org/security/2022/dsa-5161
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UIZTJOJCVVEJVOQSCHE6IJQKMPISHQ5L/
http://bugzilla.redhat.com/show_bug.cgi?id=2092427
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MO6Y3TC4WUUNKRP7OQA26OVTZTPCS6F2/
http://www.openwall.com/lists/oss-security/2022/06/20/1


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


Latest bulletins with this vulnerability