CVE-2023-54297
Unknown Unknown - Not Provided

Memory Leak in Linux Kernel btrfs Zoned Filesystem Component

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: zoned: fix memory leak after finding block group with super blocks At exclude_super_stripes(), if we happen to find a block group that has super blocks mapped to it and we are on a zoned filesystem, we error out as this is not supposed to happen, indicating either a bug or maybe some memory corruption for example. However we are exiting the function without freeing the memory allocated for the logical address of the super blocks. Fix this by freeing the logical address.

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Meta Information

Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-07-06
AI Q&A
2025-12-30
EPSS Evaluated
2026-07-05
NVD
CVE-2023-54297
EUVD
EUVD-2023-60507

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a memory leak in the Linux kernel's btrfs filesystem when used with zoned devices. Specifically, in the function exclude_super_stripes(), if a block group with super blocks is found on a zoned filesystem, the function exits with an error but fails to free the allocated memory for the logical address of the super blocks, causing a memory leak. The fix involves properly freeing this memory to prevent the leak.

Impact Analysis

The memory leak could lead to increased memory usage over time, potentially causing system instability or degraded performance on systems using the btrfs filesystem with zoned devices. This could affect system reliability until the memory is reclaimed or the system is restarted.

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