CVE-2026-46129

kernel: btrfs: fix double free in create_space_info() error path

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Severity

Moderate

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · May 28, 2026

Updated · October 20, 2026

Description

A flaw was found in the Linux kernel, specifically within the btrfs filesystem. This vulnerability, a double free, occurs in the create_space_info() function's error handling path. When an internal object initialization fails, the system attempts to release memory twice for the same resource. This can lead to system instability or a denial of service (DoS), making the system unavailable to legitimate users.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-763 · Release of Invalid Pointer or Reference