CVE-2026-64164

kernel: btrfs: tracepoints: fix sleep while in atomic context in btrfs_sync_file()

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Severity

Low

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · July 19, 2026

Updated · October 20, 2026

Description

A flaw was found in the Linux kernel's btrfs filesystem tracepoints. The btrfs_sync_file() trace event, when called in an atomic context, attempts to perform an operation that can cause the system to sleep. This can lead to a kernel crash, resulting in a Denial of Service (DoS) for the affected system. A local attacker could potentially trigger this vulnerability by enabling the trace event and executing specific filesystem operations.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-663 · Use of a Non-reentrant Function in a Concurrent Context