CVE-2026-49430
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FreeBSD | FreeBSD | 15.1-RELEASE < p1 | affected |
| FreeBSD | FreeBSD | 15.0-RELEASE < p11 | affected |
| FreeBSD | FreeBSD | 14.4-RELEASE < p7 | affected |
| FreeBSD | FreeBSD | 14.3-RELEASE < p16 | affected |
Weaknesses
- CWE-122: CWE-122: Heap-based Buffer Overflow
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
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