CVE-2025-68356 is a Linux kernel vulnerability affecting the GFS2 (Global File System 2) clustered filesystem. The issue involves recursive memory reclaim triggered by page-cache allocations within filesystem transaction paths, which can lead to deadlock and stack exhaustion. A targeted kernel fix prevents this by adjusting allocation flags. This tag covers discussions about the vulnerability, its impact on GFS2, and the corresponding patch. It is relevant for Linux system administrators, kernel developers, and enterprise IT professionals managing clustered storage environments where GFS2 is deployed.
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The Linux kernel received a targeted fix that prevents the GFS2 filesystem from triggering recursive memory reclaim through page-cache allocations — a change recorded as CVE-2025-68356 and intended to remove a subtle but real deadlock and stack-exhaustion hazard when GFS2 code allocates page...