CVE-2026-53127
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Memory Leak in Linux Kernel Block Layer

Publication date: 2026-06-24

Last updated on: 2026-07-14

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: block: fix zones_cond memory leak on zone revalidation error paths When blk_revalidate_disk_zones() fails after disk_revalidate_zone_resources() has allocated args.zones_cond, the memory is leaked because no error path frees it.

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Meta Information

Published
2026-06-24
Last Modified
2026-07-14
Generated
2026-07-15
AI Q&A
2026-06-24
EPSS Evaluated
2026-07-13
NVD
CVE-2026-53127
EUVD
EUVD-2026-38995

Affected Vendors & Products

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

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Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a memory leak issue in the Linux kernel related to block device zone management.

Specifically, when the function blk_revalidate_disk_zones() fails after disk_revalidate_zone_resources() has allocated memory for args.zones_cond, the allocated memory is not freed on the error path, causing a memory leak.

Impact Analysis

The impact of this vulnerability is a memory leak in the Linux kernel's block device zone revalidation process.

Over time, repeated failures in this process could cause increased memory usage, potentially leading to reduced system performance or stability issues.

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