CVE-2026-53127: block: fix zones_cond memory leak on zone revalidation error paths

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-24 · updated 2026-07-23
Weakness: CWE-401

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.

Affected products

Linux kernel: from 6.19 before 7.0.10 — fixed in 7.0.10

How to fix

Upgrade to a fixed version: Linux kernel 7.0.10. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/29153d128384fa7c48a8ca8d34094b1cbe2d5bdc
https://git.kernel.org/stable/c/2a2f520fda824b5a25c93f2249578ea150c24e06

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