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| author | Michal Luczaj <mhal@rbox.co> | 2025-07-03 18:18:19 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-08 18:39:49 +0300 |
| commit | 687aa0c5581b8d4aa87fd92973e4ee576b550cdf (patch) | |
| tree | 48766d82d61a0eac5ff531c05ff2bca00bf68769 /scripts/gdb/linux/xarray.py | |
| parent | 209fd720838aaf1420416494c5505096478156b4 (diff) | |
| download | linux-687aa0c5581b8d4aa87fd92973e4ee576b550cdf.tar.xz | |
vsock: Fix transport_* TOCTOU
Transport assignment may race with module unload. Protect new_transport
from becoming a stale pointer.
This also takes care of an insecure call in vsock_use_local_transport();
add a lockdep assert.
BUG: unable to handle page fault for address: fffffbfff8056000
Oops: Oops: 0000 [#1] SMP KASAN
RIP: 0010:vsock_assign_transport+0x366/0x600
Call Trace:
vsock_connect+0x59c/0xc40
__sys_connect+0xe8/0x100
__x64_sys_connect+0x6e/0xc0
do_syscall_64+0x92/0x1c0
entry_SYSCALL_64_after_hwframe+0x4b/0x53
Fixes: c0cfa2d8a788 ("vsock: add multi-transports support")
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://patch.msgid.link/20250703-vsock-transports-toctou-v4-2-98f0eb530747@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'scripts/gdb/linux/xarray.py')
0 files changed, 0 insertions, 0 deletions