CVE-2023-32233

Advisory lineage Upstream: 0 Downstream: 72
Modified
Published: 08 May 2023, 00:00
Last modified:05 May 2025, 15:58

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
1% LOW
1% probability +0.43%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

08 May 2023, 00:00
Published
Vulnerability first disclosed
05 May 2025, 15:58
Last Modified
Vulnerability information updated

Description

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 1.00%• Percentile: 77%

Techniques & Countermeasures

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • linux•linux_kernel

    ≥ 3.13, < 4.14.315 | ≥ 4.15, < 4.19.283 | ≥ 4.20, < 5.4.243 | ≥ 5.5, < 5.10.180 | ≥ 5.11, < 5.15.111 | ≥ 5.16, < 6.1.28 | ≥ 6.2, < 6.2.15 | ≥ 6.3, < 6.3.2

  • netapp•hci_baseboard_management_controller

    h300s | h410c | h410s | h500s | h700s

  • redhat•enterprise_linux

    7.0 | 8.0 | 9.0

References (11)