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

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

[Dan Carpenter]

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@oracle.com>
---
 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

[PATCH 2/2] crypto: octeontx2 - prevent underflow in get_cores_bmap()

[Dan Carpenter]

If we're going to cap "eng_grp->g->engs_num" upper bounds then we should
cap the lower bounds as well.

Fixes: 43ac0b824f1c ("crypto: octeontx2 - load microcode and create engine groups")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c b/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c
index 07f28d887c2c..392a78298398 100644
--- a/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c
@@ -29,7 +29,8 @@ static struct otx2_cpt_bitmap get_cores_bmap(struct device *dev,
 	bool found = false;
 	int i;
 
-	if (eng_grp->g->engs_num > OTX2_CPT_MAX_ENGINES) {
+	if (eng_grp->g->engs_num < 0 ||
+	    eng_grp->g->engs_num > OTX2_CPT_MAX_ENGINES) {
 		dev_err(dev, "unsupported number of engines %d on octeontx2\n",
 			eng_grp->g->engs_num);
 		return bmap;
-- 
2.20.1

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

[Herbert Xu]

On Fri, Dec 17, 2021 at 10:12:32AM +0300, Dan Carpenter wrote:
> 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@oracle.com>
> ---
>  drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

All applied.  Thanks.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt