CVE-2023-53722
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Publication date: 2025-10-22

Last updated on: 2025-10-22

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: md: raid1: fix potential OOB in raid1_remove_disk() If rddev->raid_disk is greater than mddev->raid_disks, there will be an out-of-bounds in raid1_remove_disk(). We have already found similar reports as follows: 1) commit d17f744e883b ("md-raid10: fix KASAN warning") 2) commit 1ebc2cec0b7d ("dm raid: fix KASAN warning in raid5_remove_disk") Fix this bug by checking whether the "number" variable is valid.
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Meta Information
Published
2025-10-22
Last Modified
2025-10-22
Generated
2026-06-16
AI Q&A
2025-10-22
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53722
Affected Vendors & Products
Currently, no data is known.
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is an out-of-bounds (OOB) error in the Linux kernel's RAID1 subsystem. Specifically, if the raid_disk index (rddev->raid_disk) is greater than the total number of RAID disks (mddev->raid_disks), the function raid1_remove_disk() may access memory outside the intended bounds, potentially causing instability or crashes. The issue is fixed by validating the index before use.

Impact Analysis

This vulnerability can lead to out-of-bounds memory access in the Linux kernel RAID1 code, which may cause system instability, crashes, or potentially allow attackers to exploit the kernel for further attacks depending on the context. It affects systems using RAID1 configurations in the Linux kernel.

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