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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
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| FreeBSD | FreeBSD | unknown |
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OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.
| Vendors | Products |
|---|---|
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Freebsd
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Freebsd
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Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 19 Aug 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Freebsd
Freebsd freebsd |
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| Vendors & Products |
Freebsd
Freebsd freebsd |
Wed, 19 Aug 2026 05:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Kernel heap overflow in ZFS_IOC_RECV_NEW ioctl | |
| Weaknesses | CWE-122 | |
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: freebsd
Published:
Updated: 2026-08-19T05:15:29.940Z
Reserved: 2026-05-29T20:24:28.616Z
Link: CVE-2026-49430
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-19T06:17:42.767
Modified: 2026-08-19T06:17:42.767
Link: CVE-2026-49430
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-08-19T11:30:04Z