CVE-2026-49429
EUVD-2026-6223919.08.2026, 06:17
The ZFS_IOC_USERSPACE_MANY ioctl, used by zfs-userspace(8), truncated a 64-bit output buffer size to a 32-bit integer for the kernel allocation, but used the original 64-bit size as the buffer limit when writing records. A local user with the "userused" delegated ZFS permission can trigger a kernel heap overflow via the ZFS_IOC_USERSPACE_MANY ioctl, potentially escalating privileges.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| freebsd | freebsd | 14.3 |
| freebsd | freebsd | 14.3:p1 |
| freebsd | freebsd | 14.3:p10 |
| freebsd | freebsd | 14.3:p11 |
| freebsd | freebsd | 14.3:p12 |
| freebsd | freebsd | 14.3:p13 |
| freebsd | freebsd | 14.3:p14 |
| freebsd | freebsd | 14.3:p15 |
| freebsd | freebsd | 14.3:p2 |
| freebsd | freebsd | 14.3:p3 |
| freebsd | freebsd | 14.3:p4 |
| freebsd | freebsd | 14.3:p5 |
| freebsd | freebsd | 14.3:p6 |
| freebsd | freebsd | 14.3:p7 |
| freebsd | freebsd | 14.3:p8 |
| freebsd | freebsd | 14.3:p9 |
| freebsd | freebsd | 14.4 |
| freebsd | freebsd | 14.4:p1 |
| freebsd | freebsd | 14.4:p2 |
| freebsd | freebsd | 14.4:p3 |
| freebsd | freebsd | 14.4:p4 |
| freebsd | freebsd | 14.4:p5 |
| freebsd | freebsd | 14.4:p6 |
| freebsd | freebsd | 14.4:rc1 |
| freebsd | freebsd | 15.0 |
| freebsd | freebsd | 15.0:p1 |
| freebsd | freebsd | 15.0:p10 |
| freebsd | freebsd | 15.0:p2 |
| freebsd | freebsd | 15.0:p3 |
| freebsd | freebsd | 15.0:p4 |
| freebsd | freebsd | 15.0:p5 |
| freebsd | freebsd | 15.0:p6 |
| freebsd | freebsd | 15.0:p7 |
| freebsd | freebsd | 15.0:p8 |
| freebsd | freebsd | 15.0:p9 |
| freebsd | freebsd | 15.1 |
| freebsd | freebsd | 15.1:rc2 |
| freebsd | freebsd | 15.1:rc3-p1 |
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= Vulnerable software versions