[PATCH v7 1/7] optee: ffa: Add NULL check in optee_ffa_lend_protmem
Sebastian Ene via OP-TEE <[email protected]> Wed, 17 Jun 2026 14:51:24 +0000
| Newsgroups | org.trustedfirmware.lists.op-tee,dev.linux.lists.kvmarm,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
From: Mostafa Saleh <[email protected]> From: Mostafa Saleh <[email protected]> Sashiko (locally) reports a possible null dereference under memory pressure due to the lack of validation of the allocated pointer. Fix that by adding the missing check. Fixes: 2b78d79cdf96 ("optee: FF-A: dynamic protected memory allocation") Signed-off-by: Mostafa Saleh <[email protected]> Signed-off-by: Sebastian Ene <[email protected]> Reviewed-by: Sumit Garg <[email protected]> --- drivers/tee/optee/ffa_abi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/tee/optee/ffa_abi.c b/drivers/tee/optee/ffa_abi.c index b4372fa268d0..633715b98625 100644 --- a/drivers/tee/optee/ffa_abi.c +++ b/drivers/tee/optee/ffa_abi.c @@ -698,6 +698,9 @@ static int optee_ffa_lend_protmem(struct optee *optee, struct tee_shm *protmem, int rc; mem_attr = kzalloc_objs(*mem_attr, ma_count); + if (!mem_attr) + return -ENOMEM; + for (n = 0; n < ma_count; n++) { mem_attr[n].receiver = mem_attrs[n] & U16_MAX; mem_attr[n].attrs = mem_attrs[n] >> 16; -- 2.54.0.1136.gdb2ca164c4-goog