CVE-2026-53043

CVE-2026-53043 affects the OCFS2 DLM in the Linux kernel. A crafted DLM_QUERY_REGION message can set qr_numregions beyond the buffer size (qr_regions) and trigger out-of-bounds reads due to insufficient validation in dlm_match_regions(). The issue is fixed by a patch series that adds a bounds che...

CVE-2026-53043 ocfs2/dlm: validate qr_numregions in dlm_match_regions()

In the Linux kernel, the following vulnerability has been resolved: ocfs2/dlm: validate qrnumregions in dlmmatchregions Patch series "ocfs2/dlm: fix two bugs in dlmmatchregions". In dlmmatchregions, the qrnumregions field from a DLMQUERYREGION network message is used to drive loops over the...