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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-53484 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: lib: cpu_rmap: Avoid use after free on rmap->obj array entries When calling irq_set_affinity_notifier() with NULL at the notify argument, it will cause freeing of the glue pointer in the corresponding array entry but will leave the pointer in the array. A subsequent call to free_irq_cpu_rmap() will try to free this entry again leading to possible use after free. Fix that by setting NULL to the array entry and checking that we have non-zero at the array entry when iterating over the array in free_irq_cpu_rmap(). The current code does not suffer from this since there are no cases where irq_set_affinity_notifier(irq, NULL) (note the NULL passed for the notify arg) is called, followed by a call to free_irq_cpu_rmap() so we don't hit and issue. Subsequent patches in this series excersize this flow, hence the required fix.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/4e0473f1060aa49621d40a113afde24818101d37 kernel.org
https://git.kernel.org/stable/c/67bca5f1d644f4e79b694abd8052a177de81c37f kernel.org
https://git.kernel.org/stable/c/981f339d2905b6a92ef59358158b326493aecac5 kernel.org
https://git.kernel.org/stable/c/c6ed54dd90698dc0744d669524cc1c122ded8a16 kernel.org
https://git.kernel.org/stable/c/c9115f49cf260d24d8b5f2d9a4b63cb31a627bb4 kernel.org
https://git.kernel.org/stable/c/cc2d2b3dbfb0ba57bc027fb7e1121250c50e4000 kernel.org
https://git.kernel.org/stable/c/d1308bd0b24cb1d78fa2747d5fa3e055cc628a48 kernel.org
https://git.kernel.org/stable/c/f748e15253833b771acbede14ea98f50831ac289 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-53484
NVD Published Date:
10/01/2025
NVD Last Modified:
10/02/2025
Source:
kernel.org