From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2908E31B118; Tue, 16 Dec 2025 11:53:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765886016; cv=none; b=VJIyUhhKJ+PQhyjp3V0HEbUpwe9+1ufTFX4cqeIrFmP+dQHOnD6cMkkqrLDfnaNPC4Zt46Tgg3B6zSr369XGHEsCCnwaphFF9QAVDg/cyxeRSx6+5xquG8r9q3pT28r0lxbRWN74K0zCOVLVvEy1sTQoR0/ySt9p30uQ+HAaqSs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765886016; c=relaxed/simple; bh=Cti7EVLBVE3MqQWMEOIPOG008tHFBXXuJC7KVQgBkO0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VfKykXUJNt0u0swPIMt9C14a64HRAOxBTbd7fUU4lODW/hTr/2rSjJCf0aIel6N7Wlksz/CwVC/IDdiuf+AAHgdVOyeVkd5tY996AsHL3L+aTbmxnP7X8jzsDqKshkibZZdJht0LYecsUl5C3CRBy0oqYSl2Oe8L4i/tLE+COqc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=PaNMLx3e; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="PaNMLx3e" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 732BEC4CEF1; Tue, 16 Dec 2025 11:53:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1765886015; bh=Cti7EVLBVE3MqQWMEOIPOG008tHFBXXuJC7KVQgBkO0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PaNMLx3e9BT+tHqZz9k6c6b5Lcvd1QFodKU0U72RbUJC/e6jhjmrZAuqWHSJAxPAe xeFLNCBEtPUWhzH60se6WAGigQxv9A2kcXbC+Dpj8BKqWrYnF/jnppJdlzop7ZY/bG 5t7xX4/UiOpygH22UZGi4DLw7GB4VrqG8nzQZfeo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Haotian Zhang , Herbert Xu , Sasha Levin Subject: [PATCH 6.17 311/507] crypto: starfive - Correctly handle return of sg_nents_for_len Date: Tue, 16 Dec 2025 12:12:32 +0100 Message-ID: <20251216111356.736828381@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251216111345.522190956@linuxfoundation.org> References: <20251216111345.522190956@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Haotian Zhang [ Upstream commit e9eb52037a529fbb307c290e9951a62dd728b03d ] The return value of sg_nents_for_len was assigned to an unsigned long in starfive_hash_digest, causing negative error codes to be converted to large positive integers. Add error checking for sg_nents_for_len and return immediately on failure to prevent potential buffer overflows. Fixes: 7883d1b28a2b ("crypto: starfive - Add hash and HMAC support") Signed-off-by: Haotian Zhang Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/starfive/jh7110-hash.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/starfive/jh7110-hash.c b/drivers/crypto/starfive/jh7110-hash.c index 6cfe0238f615f..66a8b04c0a55b 100644 --- a/drivers/crypto/starfive/jh7110-hash.c +++ b/drivers/crypto/starfive/jh7110-hash.c @@ -326,6 +326,7 @@ static int starfive_hash_digest(struct ahash_request *req) struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); struct starfive_cryp_dev *cryp = ctx->cryp; + int sg_len; memset(rctx, 0, sizeof(struct starfive_cryp_request_ctx)); @@ -334,7 +335,10 @@ static int starfive_hash_digest(struct ahash_request *req) rctx->in_sg = req->src; rctx->blksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); rctx->digsize = crypto_ahash_digestsize(tfm); - rctx->in_sg_len = sg_nents_for_len(rctx->in_sg, rctx->total); + sg_len = sg_nents_for_len(rctx->in_sg, rctx->total); + if (sg_len < 0) + return sg_len; + rctx->in_sg_len = sg_len; ctx->rctx = rctx; return crypto_transfer_hash_request_to_engine(cryp->engine, req); -- 2.51.0