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| author | Kshitiz Varshney <kshitiz.varshney@nxp.com> | 2021-09-19 17:09:53 +0200 |
|---|---|---|
| committer | Priyanka Jain <priyanka.jain@nxp.com> | 2021-11-09 14:43:24 +0530 |
| commit | bd2a4eb977232c7062489251cdb5a36a99757fc1 (patch) | |
| tree | 6a19bff40c85cdadf674ef2343a387b43a51ac09 /board | |
| parent | c0e0cf4989d1de847c4b2ce1927ea7a121351801 (diff) | |
| download | u-boot-bd2a4eb977232c7062489251cdb5a36a99757fc1.zip u-boot-bd2a4eb977232c7062489251cdb5a36a99757fc1.tar.gz u-boot-bd2a4eb977232c7062489251cdb5a36a99757fc1.tar.bz2 | |
board: fsl_validate: Fix Double free Issue
Remove Double free issue from calc_img_key_hash() and
calc_esbchdr_esbc_hash() function.
Verified the secure boot changes using lx2162aqds board.
Signed-off-by: Kshitiz Varshney <kshitiz.varshney@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/common/fsl_validate.c | 28 |
1 files changed, 6 insertions, 22 deletions
diff --git a/board/freescale/common/fsl_validate.c b/board/freescale/common/fsl_validate.c index c90afe2..34875d0 100644 --- a/board/freescale/common/fsl_validate.c +++ b/board/freescale/common/fsl_validate.c @@ -499,12 +499,8 @@ static int calc_img_key_hash(struct fsl_secboot_img_priv *img) return ret; ret = algo->hash_init(algo, &ctx); - if (ret) { - if (ctx) - free(ctx); + if (ret) return ret; - } - /* Update hash for ESBC key */ #ifdef CONFIG_KEY_REVOCATION if (check_srk(img)) { @@ -519,15 +515,12 @@ static int calc_img_key_hash(struct fsl_secboot_img_priv *img) img->img_key, img->key_len, 1); if (ret) return ret; - /* Copy hash at destination buffer */ ret = algo->hash_finish(algo, ctx, hash_val, algo->digest_size); if (ret) { - if (ctx) - free(ctx); + free(ctx); return ret; } - for (i = 0; i < SHA256_BYTES; i++) img->img_key_hash[i] = hash_val[i]; @@ -554,18 +547,14 @@ static int calc_esbchdr_esbc_hash(struct fsl_secboot_img_priv *img) ret = algo->hash_init(algo, &ctx); /* Copy hash at destination buffer */ - if (ret) { - free(ctx); + if (ret) return ret; - } /* Update hash for CSF Header */ ret = algo->hash_update(algo, ctx, (u8 *)&img->hdr, sizeof(struct fsl_secboot_img_hdr), 0); - if (ret) { - free(ctx); + if (ret) return ret; - } /* Update the hash with that of srk table if srk flag is 1 * If IE Table is selected, key is not added in the hash @@ -592,22 +581,17 @@ static int calc_esbchdr_esbc_hash(struct fsl_secboot_img_priv *img) key_hash = 1; } #endif - if (ret) { - free(ctx); + if (ret) return ret; - } if (!key_hash) { free(ctx); return ERROR_KEY_TABLE_NOT_FOUND; } - /* Update hash for actual Image */ ret = algo->hash_update(algo, ctx, (u8 *)(*(img->img_addr_ptr)), img->img_size, 1); - if (ret) { - free(ctx); + if (ret) return ret; - } /* Copy hash at destination buffer */ ret = algo->hash_finish(algo, ctx, hash_val, algo->digest_size); |