CVE-2023-53380
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-18

Last updated on: 2025-12-11

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix null-ptr-deref of mreplace in raid10_sync_request There are two check of 'mreplace' in raid10_sync_request(). In the first check, 'need_replace' will be set and 'mreplace' will be used later if no-Faulty 'mreplace' exists, In the second check, 'mreplace' will be set to NULL if it is Faulty, but 'need_replace' will not be changed accordingly. null-ptr-deref occurs if Faulty is set between two check. Fix it by merging two checks into one. And replace 'need_replace' with 'mreplace' because their values are always the same.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-09-18
Last Modified
2025-12-11
Generated
2026-06-16
AI Q&A
2025-09-18
EPSS Evaluated
2026-06-14
NVD
CVE-2023-53380
Affected Vendors & Products
Showing 6 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 4.20 (inc) to 5.4.251 (exc)
linux linux_kernel From 5.5 (inc) to 5.10.188 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.121 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.39 (exc)
linux linux_kernel From 6.2 (inc) to 6.3.13 (exc)
linux linux_kernel From 6.4 (inc) to 6.4.4 (exc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability is a null pointer dereference in the Linux kernel's RAID10 synchronization function (raid10_sync_request). It occurs because two separate checks on a variable 'mreplace' are inconsistent: the first sets a flag 'need_replace' and uses 'mreplace' if it is not faulty, while the second sets 'mreplace' to NULL if it is faulty but does not update 'need_replace'. If the 'Faulty' condition changes between these checks, a null pointer dereference can happen. The fix merges the two checks and replaces 'need_replace' with 'mreplace' to ensure consistency.

Impact Analysis

This vulnerability can cause a null pointer dereference in the Linux kernel RAID10 synchronization process, which may lead to a kernel crash or system instability. This can result in denial of service or potential data loss on systems using RAID10 configurations.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2023-53380. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart