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Mon, 04 Mar 2024 20:02:42 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1rhDYN-00Ed9V-12; Mon, 04 Mar 2024 20:00:47 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 4 Mar 2024 20:00:20 +0100 Message-Id: <20240304190038.3486881-96-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240304190038.3486881-1-a.fatoum@pengutronix.de> References: <20240304190038.3486881-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240304_190251_379831_E5A4306F X-CRM114-Status: GOOD ( 10.33 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.4 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 095/113] efi: payload: protect against buggy EFI implementations X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) barebox' EFI loaded image handle should have a device path, but on the off-case that it doesn't, we should just return an error code instead of dereferencing a null pointer. Signed-off-by: Ahmad Fatoum --- efi/payload/init.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/efi/payload/init.c b/efi/payload/init.c index 0f518d4954cb..5701d7ad6dcf 100644 --- a/efi/payload/init.c +++ b/efi/payload/init.c @@ -328,6 +328,9 @@ static int efi_postcore_init(void) loaded_image_dp = device_path_from_handle(efi_loaded_image->device_handle); pr_debug("loaded-image: %pD\n", loaded_image_dp); + if (!loaded_image_dp) + return -EINVAL; + uuid = device_path_to_partuuid(loaded_image_dp); if (uuid) { wchar_t *uuid16 = xstrdup_char_to_wchar(uuid); -- 2.39.2