CVE-2023-53210 Affecting kernel-rt-64k-debug-modules-partner package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

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  • Snyk IDSNYK-CENTOS9-KERNELRT64KDEBUGMODULESPARTNER-12727406
  • published16 Sept 2025
  • disclosed15 Sept 2025

Introduced: 15 Sep 2025

NewCVE-2023-53210  (opens in a new tab)

How to fix?

There is no fixed version for Centos:9 kernel-rt-64k-debug-modules-partner.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-64k-debug-modules-partner package and not the kernel-rt-64k-debug-modules-partner package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()

r5l_flush_stripe_to_raid() will check if the list 'flushing_ios' is empty, and then submit 'flush_bio', however, r5l_log_flush_endio() is clearing the list first and then clear the bio, which will cause null-ptr-deref:

T1: submit flush io raid5d handle_active_stripes r5l_flush_stripe_to_raid // list is empty // add 'io_end_ios' to the list bio_init submit_bio // io1

T2: io1 is done r5l_log_flush_endio list_splice_tail_init // clear the list T3: submit new flush io ... r5l_flush_stripe_to_raid // list is empty // add 'io_end_ios' to the list bio_init bio_uninit // clear bio->bi_blkg submit_bio // null-ptr-deref

Fix this problem by clearing bio before clearing the list in r5l_log_flush_endio().

CVSS Base Scores

version 3.1