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CVE-2023-4015

nvd nist
Published: Sep 6, 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

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used. We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.

Affected (5)

Linux
1 product
Linux Kernel
Debian
1 product
Debian Linux
Configuration A
4 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
From 5.11 to 5.15.124
Linux Kernel
From 5.16 to 6.1.43
Linux Kernel
From 5.9 to 5.10.190
Linux Kernel
From 6.2 to 6.4.8
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 12.0

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 (6)

Source: cve-coordination@google.com
Issue TrackingMailing ListPatchVendor Advisory
Source: cve-coordination@google.com
PatchVendor Advisory
Source: cve-coordination@google.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingMailing ListPatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.