CVE-2026-89576 dm-era: fix shadowed superblock leak on take-snap failure

In the Linux kernel, the following vulnerability has been resolved: dm-era: fix shadowed superblock leak on take-snap failure metadatatakesnap bumps the live superblock refcount and then dmtmshadowblock allocates a new block for the metadata snapshot. If the subsequent dmsmincblock of...

PT-2026-90292

In the Linux kernel, the following vulnerability has been resolved: dm-era: fix shadowed superblock leak on take-snap failure metadata take snap bumps the live superblock refcount and then dm tm shadow block allocates a new block for the metadata snapshot. If the subsequent dm sm inc block of...