diff options
| author | Richard Weinberger <richard@nod.at> | 2025-04-18 10:02:50 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2025-04-22 09:50:28 +0200 |
| commit | 3d7aa0c7b4e96cd460826d932e44710cdeb3378b (patch) | |
| tree | 3a70c7265558509dbc5ea2d8917293574d428f60 | |
| parent | 81dd1feb19c7a812e51fa6e2f988f4def5e6ae39 (diff) | |
nvmet: fix out-of-bounds access in nvmet_enable_port
When trying to enable a port that has no transport configured yet,
nvmet_enable_port() uses NVMF_TRTYPE_MAX (255) to query the transports
array, causing an out-of-bounds access:
[ 106.058694] BUG: KASAN: global-out-of-bounds in nvmet_enable_port+0x42/0x1da
[ 106.058719] Read of size 8 at addr ffffffff89dafa58 by task ln/632
[...]
[ 106.076026] nvmet: transport type 255 not supported
Since commit 200adac75888, NVMF_TRTYPE_MAX is the default state as configured by
nvmet_ports_make().
Avoid this by checking for NVMF_TRTYPE_MAX before proceeding.
Fixes: 200adac75888 ("nvme: Add PCI transport type")
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
| -rw-r--r-- | drivers/nvme/target/core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 71f8d06998d6..245475c43127 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -324,6 +324,9 @@ int nvmet_enable_port(struct nvmet_port *port) lockdep_assert_held(&nvmet_config_sem); + if (port->disc_addr.trtype == NVMF_TRTYPE_MAX) + return -EINVAL; + ops = nvmet_transports[port->disc_addr.trtype]; if (!ops) { up_write(&nvmet_config_sem); |