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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-53832 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix null-ptr-deref in raid10_sync_request init_resync() inits mempool and sets conf->have_replacemnt at the beginning of sync, close_sync() frees the mempool when sync is completed. After [1] recovery might be skipped and init_resync() is called but close_sync() is not. null-ptr-deref occurs with r10bio->dev[i].repl_bio. The following is one way to reproduce the issue. 1) create a array, wait for resync to complete, mddev->recovery_cp is set to MaxSector. 2) recovery is woken and it is skipped. conf->have_replacement is set to 0 in init_resync(). close_sync() not called. 3) some io errors and rdev A is set to WantReplacement. 4) a new device is added and set to A's replacement. 5) recovery is woken, A have replacement, but conf->have_replacemnt is 0. r10bio->dev[i].repl_bio will not be alloced and null-ptr-deref occurs. Fix it by not calling init_resync() if recovery skipped. [1] commit 7e83ccbecd60 ("md/raid10: Allow skipping recovery when clean arrays are assembled")


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.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/14964127be77884003976a392c9faa9ebaabbbe1 kernel.org
https://git.kernel.org/stable/c/38d33593260536840b49fd1dcac9aedfd14a9d42 kernel.org
https://git.kernel.org/stable/c/68695084077e3de9d3e94e09238ace2b6f246446 kernel.org
https://git.kernel.org/stable/c/99b503e4edc5938885d839cf0e7571963f75d800 kernel.org
https://git.kernel.org/stable/c/9e9efc77efd1956cc244af975240f2513d78a371 kernel.org
https://git.kernel.org/stable/c/a405c6f0229526160aa3f177f65e20c86fce84c5 kernel.org
https://git.kernel.org/stable/c/b50fd1c3d9d0175aa29ff2706ef36cc178bc356a kernel.org
https://git.kernel.org/stable/c/bdbf104b1c91fbf38f82c522ebf75429f094292a kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-53832
NVD Published Date:
12/09/2025
NVD Last Modified:
12/09/2025
Source:
kernel.org