CVE-2026-53043 | In the Linux kernel, the following vulnerability has been resolved: ocfs2/dlm: validate qr_numregions in dlm_match_regions() Patch series "ocfs2/dlm: fix two bugs in dlm_match_regions()". In dlm_match_regions(), the qr_numregions field from a DLM_QUERY_REGION network message is used to drive loops over the qr_regions buffer without sufficient validation. This series fixes two issues: - Patch 1 adds a bounds check to reject messages where qr_numregions
In the Linux kernel, the following vulnerability has been resolved:
ocfs2/dlm: validate qr_numregions in dlm_match_regions()
Patch series "ocfs2/dlm: fix two bugs in dlm_match_regions()".
In dlm_match_regions(), the qr_numregions field from a DLM_QUERY_REGION
network message is used to drive loops over the qr_regions buffer without
sufficient validation. This series fixes two issues:
- Patch 1 adds a bounds check to reject messages where qr_numregions
exceeds O2NM_MAX_REGIONS. The o2net layer only validates message
byte length; it does not constrain field values, so a crafted message
can set qr_numregions up to 255 and trigger out-of-bounds reads past
the 1024-byte qr_regions buffer.
- Patch 2 fixes an off-by-one in the local-vs-remote comparison loop,
which uses '
- 🔗 git.kernel.org/stable/c/d3d5efade0c79dac1cac98c0cb111543…
- 🔗 git.kernel.org/stable/c/f69551139caf6d24242a0ad049ee46b2…
- 🔗 git.kernel.org/stable/c/1f8b91275912cd428289c1fb424bebd7…
- 🔗 git.kernel.org/stable/c/f37de46149db49abd2b24f4f0c5a88cf…
- 🔗 git.kernel.org/stable/c/6c6e8fc3c007319981647b410c29bb57…
- 🔗 git.kernel.org/stable/c/3f474c33ebc2e2ca3fcb587d7de43753…
- 🔗 git.kernel.org/stable/c/3c2d0de23ae4be22b6c18e8f0915be74…
- 🔗 git.kernel.org/stable/c/7ab3fbb01bc6d79091bc375e5235d360…
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CVE-2026-53043 | In the Linux kernel, the following vulnerability has been resolved: ocfs2/dlm: validate qr_numregions in dlm_match_regions() Patch series "ocfs2/dlm: fix two bugs in dlm_match_regions()". In dlm_match_regions(), the qr_numregions field from a DLM_QUERY_REGION network message is used to drive loops over the qr_regions buffer without sufficient validation. This series fixes two issues: - Patch 1 adds a bounds check to reject messages where qr_numregions
In the Linux kernel, the following vulnerability has been resolved: ocfs2/dlm: validate qr_numregions in dlm_match_regions() Patch series "ocfs2/dlm: fix two bugs in dlm_match_regions()". In dlm_match_regions(), the qr_numregions field f