[PATCH 1/2] crypto: octeontx2 - out of bounds access in otx2_cpt_dl_custom_egrp_delete()

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If "egrp" is negative then it is causes an out of bounds access in
eng_grps->grp[].

Fixes: d9d7749773e8 ("crypto: octeontx2 - add apis for custom engine groups")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c b/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c
index 57307eac541c..07f28d887c2c 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c
@@ -1695,7 +1695,7 @@ int otx2_cpt_dl_custom_egrp_delete(struct otx2_cptpf_dev *cptpf,
 	if (kstrtoint(tmp, 10, &egrp))
 		goto err_print;
 
-	if (egrp >= OTX2_CPT_MAX_ENGINE_GROUPS) {
+	if (egrp < 0 || egrp >= OTX2_CPT_MAX_ENGINE_GROUPS) {
 		dev_err(dev, "Invalid engine group %d", egrp);
 		return -EINVAL;
 	}
-- 
2.20.1




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