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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-49430

Kernel heap overflow in ZFS_IOC_RECV_NEW ioctl

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Status
Published
Published
Updated
Assigning organization
freebsd

Description

The ZFS_IOC_RECV_NEW ioctl, in the heal receive path, similarly truncated a 64-bit payload size to a 32-bit integer for allocation, then used the original 64-bit size as the length for a byteswap operation. A local user with the "receive" delegated ZFS permission can trigger kernel memory corruption via ZFS_IOC_RECV_NEW by sending a crafted receive stream in heal mode.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

FreeBSD FreeBSD

Default version status: unknown

  • 15.1-RELEASE to < p1affected
  • 15.0-RELEASE to < p11affected
  • 14.4-RELEASE to < p7affected
  • 14.3-RELEASE to < p16affected

References