crypto: starfive - Do not free stack buffer

RSA text data uses variable length buffer allocated in software stack. Calling kfree on it causes undefined behaviour in subsequent operations. Cc: <[email protected]> torvalds#6.7+ Signed-off-by: Jia Jie Ho <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
caleberi · May 10, 2024 · d7f0164 · d7f0164
1 parent 25ca4a8
commit d7f0164
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/drivers/crypto/starfive/jh7110-rsa.c b/drivers/crypto/starfive/jh7110-rsa.c
@@ -276,7 +276,6 @@ static int starfive_rsa_enc_core(struct starfive_cryp_ctx *ctx, int enc)
 
 err_rsa_crypt:
 	writel(STARFIVE_RSA_RESET, cryp->base + STARFIVE_PKA_CACR_OFFSET);
-	kfree(rctx->rsa_data);
 	return ret;
 }