CVE-2023-53566 Vulnerability Analysis & Exploit Details

CVE-2023-53566
Vulnerability Scoring

5.5
/10
Significant Risk

Security assessments indicate that CVE-2023-53566 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2023-53566 Details

Status: Analyzed

Last updated: 🕝 06 Feb 2026, 14:32 UTC
Originally published on: 🕓 04 Oct 2025, 16:15 UTC

Time between publication and last update: 124 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVE-2023-53566 Vulnerability Summary

CVE-2023-53566: In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_rbtree: fix null deref on element insertion There is no guarantee that rb_prev() will not return NULL in nft_rbtree_gc_elem(): general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] nft_add_set_elem+0x14b0/0x2990 nf_tables_newsetelem+0x528/0xb30 Furthermore, there is a possible use-after-free while iterating, 'node' can be free'd so we need to cache the next value to use.

Assessing the Risk of CVE-2023-53566

Access Complexity Graph

The exploitability of CVE-2023-53566 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2023-53566

CVE-2023-53566 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2023-53566, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2023-53566, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2023-53566 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2023-53566 poses no threat to data integrity.
  • Availability: High
    CVE-2023-53566 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2023-53566 References

External References

CWE Common Weakness Enumeration

CWE-476

Vulnerable Configurations

  • cpe:2.3:o:linux:linux_kernel:5.10.166:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.166:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.167:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.167:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.168:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.168:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.169:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.169:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.170:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.170:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.171:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.171:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.172:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.172:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.173:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.173:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.174:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.174:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.175:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.175:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.176:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.176:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.177:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.177:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.178:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.178:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.179:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.179:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.10.180:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.10.180:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.91:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.91:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.92:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.92:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.93:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.93:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.94:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.94:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.95:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.95:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.96:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.96:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.97:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.97:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.98:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.98:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.99:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.99:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15:rc7:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.100:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.100:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.101:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.101:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.102:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.102:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.103:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.103:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.104:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.104:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.105:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.105:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.106:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.106:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.107:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.107:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.108:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.108:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.109:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.109:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.110:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.110:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.111:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.111:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.15.112:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:5.15.112:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.16:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.16:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.17:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.17:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.18:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.18:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.19:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.19:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.20:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.20:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.21:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.21:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.22:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.22:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.23:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.23:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.24:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.24:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.25:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.25:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.26:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.26:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.27:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.27:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.28:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.28:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.29:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.29:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.12:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.12:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.15:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.15:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2.16:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2.16:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.3:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.3:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.3.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.3.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.3.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.3.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.3.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.3.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*

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