transport_{h2g,g2h,dgram,local} may become NULL on vsock_core_unregister().
Make sure a poorly timed `rmmod transport` won't lead to a NULL/stale
pointer dereference.
Note that these oopses are pretty unlikely to happen in the wild. Splats
were collected after sprinkling kernel with mdelay()s.
Signed-off-by: Michal Luczaj <mhal@xxxxxxx>
---
Michal Luczaj (3):
vsock: Fix transport_{h2g,g2h} TOCTOU
vsock: Fix transport_g2h TOCTOU
vsock: Fix transport_* TOCTOU
net/vmw_vsock/af_vsock.c | 34 +++++++++++++++++++++++++++-------
1 file changed, 27 insertions(+), 7 deletions(-)
---
base-commit: d0fa59897e049e84432600e86df82aab3dce7aa5
change-id: 20250523-vsock-transports-toctou-4b75d9c2a805
Best regards,
--
Michal Luczaj <mhal@xxxxxxx>
