CVE-2026-49430
High · 7.8CVSS
7.8
EPSS
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Published
Aug 19, 2026
CISA due date
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The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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