CVEvulnerability

CVE-2026-49430

7.8 HIGH Published 2026-08-19 Modified 2026-09-01 Official page ↗
Status
Analyzed
Published
2026-08-19
Last modified
2026-09-01
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-122

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 configurations

• freebsd freebsd 14.3 • freebsd freebsd 14.4 • freebsd freebsd 15.0 • freebsd freebsd 15.1

Related

Weakness · CWE (1)

  • CWE-122 Heap-based Buffer Overflow weakness

References