From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 17 Apr 2026 11:14:35 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wDfHX-00D8dW-29 for lore@lore.pengutronix.de; Fri, 17 Apr 2026 11:14:35 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1wDfHW-0004uS-V3 for lore@pengutronix.de; Fri, 17 Apr 2026 11:14:35 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; 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Fri, 17 Apr 2026 11:14:06 +0200 Received: from pty.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::c5]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wDfH3-005pB3-3B; Fri, 17 Apr 2026 11:14:05 +0200 Received: from sha by pty.whiteo.stw.pengutronix.de with local (Exim 4.98.2) (envelope-from ) id 1wDfH3-0000000FluO-3gpP; Fri, 17 Apr 2026 11:14:05 +0200 Date: Fri, 17 Apr 2026 11:14:05 +0200 From: Sascha Hauer To: Ahmad Fatoum Cc: barebox@lists.infradead.org, str@pengutronix.de Message-ID: References: <20260416153455.2630276-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260416153455.2630276-1-a.fatoum@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260417_021408_080832_8ADAF8A5 X-CRM114-Status: GOOD ( 27.59 ) 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=-5.1 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 autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2] Documentation: migration-guides: mention possible FIT compat break 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) On Thu, Apr 16, 2026 at 05:34:37PM +0200, Ahmad Fatoum wrote: > With manually written ITS, it's easy to omit signing some of the images. > This flew under the radar so far, but with v2026.03.0 (or v2025.09.3), > this will lead to verification failure. > > The security advisory has been updated, but it's nonetheless worth an > addition to the migration guide. > > Signed-off-by: Ahmad Fatoum > --- > v1 -> v2: > - add same notice for v2025.09.3 as well > --- > .../migration-guides/migration-2025.09.3.rst | 21 +++++++++++++++++++ > .../migration-guides/migration-2026.03.0.rst | 19 +++++++++++++++++ > 2 files changed, 40 insertions(+) > create mode 100644 Documentation/migration-guides/migration-2025.09.3.rst > > diff --git a/Documentation/migration-guides/migration-2025.09.3.rst b/Documentation/migration-guides/migration-2025.09.3.rst > new file mode 100644 > index 000000000000..7fbea78a46d0 > --- /dev/null > +++ b/Documentation/migration-guides/migration-2025.09.3.rst > @@ -0,0 +1,21 @@ > +Release v2025.09.3 > +================== > + > +FIT Images > +---------- > + > +The fix for `CVE-2026-33243 `_ > +has the side effect that barebox after v2026.03.0 will not boot a signed Shouldn't we mention the corresponding stable versions here? > +configuration that excludes some images from the signature. > + > +Previously, it was possible to generate readily exploitable FIT images > +by omitting them from ``sign-images`` in the ITS. > + > +If a FIT fails to boot with **v2026.03.1**, when it succesfully booted > +v2026.02.0 or earlier, it's likely that it was vulnerable even without and here? Sascha > +knowledge of CVE-2026-33243. > + > +Recommendation is to not write FIT ITS manually, but to use higher level > +tooling that generates the ITS and feeds it to ``mkimage(1)``. > + > +For more details, refer to the `security advisory `_. > diff --git a/Documentation/migration-guides/migration-2026.03.0.rst b/Documentation/migration-guides/migration-2026.03.0.rst > index 1bd06ac7b743..f23001886b8b 100644 > --- a/Documentation/migration-guides/migration-2026.03.0.rst > +++ b/Documentation/migration-guides/migration-2026.03.0.rst > @@ -8,3 +8,22 @@ On NXP i.MX8MP the SoC UID was read out wrong. It really is 128bit from which > barebox only read 64bit. barebox now does it correctly, but rolled out devices > might depend on the SoC UID being constant. In that case > CONFIG_ARCH_IMX8MP_KEEP_COMPATIBLE_SOC_UID should be enabled. > + > +FIT Images > +---------- > + > +The fix for `CVE-2026-33243 `_ > +has the side effect that barebox after v2026.03.0 will not boot a signed > +configuration that excludes some images from the signature. > + > +Previously, it was possible to generate readily exploitable FIT images > +by omitting them from ``sign-images`` in the ITS. > + > +If a FIT fails to boot with **v2026.03.1**, when it succesfully booted > +v2026.02.0 or earlier, it's likely that it was vulnerable even without > +knowledge of CVE-2026-33243. > + > +Recommendation is to not write FIT ITS manually, but to use higher level > +tooling that generates the ITS and feeds it to ``mkimage(1)``. > + > +For more details, refer to the `security advisory `_. > -- > 2.47.3 > > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |