diff options
| author | Vincenzo Maffione <vmaffione@FreeBSD.org> | 2022-04-05 23:26:02 +0000 |
|---|---|---|
| committer | Ed Maste <emaste@FreeBSD.org> | 2022-04-05 23:26:02 +0000 |
| commit | 4996f46e03a442765c56b562c04c6e3ceae0104c (patch) | |
| tree | e4616e7f173c78f9dad07fe78e0285b8fe8f9ba0 /sys/dev/netmap/netmap_kloop.c | |
| parent | 00ca345e83ada8b68e302f5406f9799209872c90 (diff) | |
netmap: Fix TOCTOU vulnerability in nmreq_copyin
The total size of the user-provided nmreq was first computed and then
trusted during the copyin. This might lead to kernel memory corruption
and escape from jails/containers.
Reported by: Lucas Leong (@_wmliang_) of Trend Micro Zero Day Initiative
Security: CVE-2022-23084
MFC after: 3 days
(cherry picked from commit 393729916564ed13f966e09129a24e6931898d12)
(cherry picked from commit 9f600a260a738d87015b2e9722b7b4f228cbd47d)
Approved by: so
Security: FreeBSD-SA-22:04.netmap
Diffstat (limited to 'sys/dev/netmap/netmap_kloop.c')
0 files changed, 0 insertions, 0 deletions