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CVE-2023-31248

nvd nist
Published: Jul 5, 2023Modified: Jun 17, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

Description

Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace

Affected (12)

Show all products
Linux: Linux Kernel · Fedoraproject: Fedora · Debian: Debian Linux · Canonical: Ubuntu Linux
Linux
1 product
Linux Kernel
Fedoraproject
1 product
Fedora
Debian
1 product
Debian Linux
Canonical
1 product
Ubuntu Linux
Configuration A
4 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
From 5.11 to 5.15.121
Linux Kernel
From 5.16 to 6.1.39
Linux Kernel
From 5.9 to 5.10.188
Linux Kernel
From 6.2 to 6.4.4
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Fedoraproject
Fedora
Version 37
Fedora
Version 38
Configuration C
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 11.0
Configuration D
5 vulnerable
Vulnerable SoftwareAffected Versions
Canonical
Ubuntu Linux
Version 14.04
Ubuntu Linux
Version 16.04
Ubuntu Linux
Version 18.04
Ubuntu Linux
Version 20.04
Ubuntu Linux
Version 22.04

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (20)

Source: security@ubuntu.com
Third Party AdvisoryVDB Entry
Source: security@ubuntu.com
Third Party AdvisoryVDB Entry
Source: security@ubuntu.com
Mailing ListThird Party Advisory
Source: security@ubuntu.com
Third Party AdvisoryVDB Entry
Source: security@ubuntu.com
Mailing List
Source: security@ubuntu.com
Mailing List
Source: security@ubuntu.com
Patch
Source: security@ubuntu.com
Source: security@ubuntu.com
Third Party Advisory
Source: security@ubuntu.com
Mailing List
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List

Timeline

No history available yet.