CVE detail
CVE-2026-49430
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 6.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 1
- within the 30d window
- Peak daily
- 1
- highest bucket
Evidence
Source links by recency
1 source links · newest first
- https://security.freebsd.org/advisories/FreeBSD-SA-26:40.zfs.ascsecurity.freebsd.org
No excerpt available.
Vendor Advisorysecurity.freebsd.orgAug 19, 2026, 6:17 AM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
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