CVE-2026-64600

The CVE-2026-64600 issue is a race condition in the Linux kernel XFS CoW reflink path. When two concurrent writes trigger a CoW cycle, XFS reclaims the ILOCK, causing data-fork mappings to appear stale and the refcount btree to reflect incorrect blocks. The fix adds a data-fork mapping refresh if...

EUVD-2026-47879

In the Linux kernel, the following vulnerability has been resolved: xfs: resample the data fork mapping after cycling ILOCK xfsreflinkfillcowhole,delalloc are both presented with an inode, a data fork mapping, and a cow fork mapping. Unfortunately, these two helpers cycle the ILOCK to grab a...