CVE-2026-72018
dibs: loopback: validate offset and size in move_data()
HIGH 7.8EPSS 0.2%
In the Linux kernel, the following vulnerability has been resolved: dibs: loopback: validate offset and size in move_data() The loopback move_data() performs a memcpy into the registered DMB without checking whether offset + size exceeds the DMB length. Unlike real ISM hardware, which enforces memory region bounds natively, the software loopback has no such protection. A peer-supplied out-of-bounds offset or oversized write would result in an OOB write past the allocated kernel buffer. Add an explicit bounds check before the memcpy to reject such requests with -EINVAL.
- Affected
- Linux
- CVSS v3.1 CNA
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.17% chance of exploitation in the next 30 days, 6th percentile
- Published
- 2026-08-15
- Updated
- 2026-10-16
Proof-of-concept exploits (1)
- 0xBlackash/CVE-2026-720180★ · 2026-09-30