Improper locking in Linux kernel - CVE-2023-52923

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Main Vulnerability Database Vulnerabilities #VU103086

Improper locking in Linux kernel - CVE-2023-52923

Published: January 20, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU103086
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-52923
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the nft_rbtree_cmp(), __nft_rbtree_lookup(), nft_rbtree_get(), nft_rbtree_gc_elem(), nft_rbtree_activate(), nft_rbtree_flush() and nft_rbtree_gc() functions in net/netfilter/nft_set_rbtree.c, within the pipapo_drop(), pipapo_gc() and nft_pipapo_activate() functions in net/netfilter/nft_set_pipapo.c, within the nft_rhash_cmp(), nft_rhash_activate(), nft_rhash_flush(), nft_rhash_deactivate(), nft_rhash_gc() and nft_rhash_destroy() functions in net/netfilter/nft_set_hash.c. A local user can perform a denial of service (DoS) attack.


How to mitigate CVE-2023-52923

Install update from vendor's website.

Sources