From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 18F21606A31B for ; Thu, 5 Nov 2026 20:05:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=pT/NFdWt; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=H1XBvOeH DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Reply-To:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Date: Content-Transfer-Encoding:Content-Type:References:In-Reply-To:Cc:To:Subject: From:Message-ID:MIME-Version:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=FD0zXeI/isP72fw/ayOidXLEWS0eS7g6u0vyIbhFYcI=; b=pT/NFdWtht7B6D3MR7sMW9nKQr RdmUebaBqKC++mw4x2C28IZe2VhkIQ48QwDbPQH8X0FUcA5zW2KaI2vHmFqdJ4puTg7nSm2K9VmJK GvS7Pd5IjJQ1SbCrc4TmnGgHXgxHJcAXsJSkSUFgCNTdzcD+HdlSAQm7mwwa0AgFPoOi9yeqXWLfe roQZyDeALOlkCa94H+W1KmaZs93x2R9iFBEWG2/YyoEYd2D9sZcXR0XcGXA4dGpoJjYcNJzaDt0tW OyXY2VPMutlyIP+LQ1DupSvn8nyo1+oK2QI4ZdCLZC98V4ClPlqIZZRD6auu8ITOnaWNqyKA3f/mU iwohSEUw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xP3BJ-0000000ALBd-0N9J; Thu, 05 Nov 2026 19:31:29 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xP39c-0000000AKQT-1XMi for kexec@lists.infradead.org; Thu, 05 Nov 2026 19:29:47 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id C9CC0601BE; Thu, 5 Nov 2026 19:29:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2966B1F00A20; Thu, 5 Nov 2026 19:29:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793906983; bh=FD0zXeI/isP72fw/ayOidXLEWS0eS7g6u0vyIbhFYcI=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=H1XBvOeHKHmEnMkDZUHXEyfUtxCM50iTgTdglUxQp7JDN+qlEWTIsqSpbnUlpXjRN 988hcRyCOI8UWFHz/f+qK5LDQHQXayVRQ3262j47Zn0Jqh760jpB+AGIZEjmyhHslx Qqs2Y14lCac9UjAE5y2LlNmPZovL0mIlxziAqVpEYWF7VcSH/XugirGbUWyl+1JJad +WoSrpl7AP1ruZ40/ApjycvpY+4AnxyaNTaAT+qJ2l5Ec76Lx2QiGxwb9aykDXG/Bj ZE2WhLZrYRFfMMBbtAErBrjrpSX00IacUpKBWO3AqMz+Y2+flePrBdhMVItf47L5ux lY1VLRG53p8sw== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH RESEND v2 27/51] um: NUL-terminate what is written to /proc/exitcode To: "Christian Brauner" Cc: "Linus Torvalds" , "Jann Horn" , "Josef Bacik" , "Chris Mason" , "Jeff Layton" , NeilBrown , "Eric Dumazet" , "Thomas Gleixner" , "Al Viro" , "Jonathan Corbet" , "Christoph Hellwig" , "Greg Kroah-Hartman" , "Joel Granados" , "Kees Cook" , "Jan Kara" , "Jan Kara" , linux-s390@vger.kernel.org, coreteam@netfilter.org, kexec@lists.infradead.org, linux-pci@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, linux-m68k@lists.linux-m68k.org, linux-serial@vger.kernel.org, "Takashi Iwai" , linux-ext4@vger.kernel.org, "Chuck Lever" , tytso@mit.edu, "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" In-Reply-To: <20261104-work-procfs-bugfixes-v2-27-021c84d852e0@kernel.org> References: <20261104-work-procfs-bugfixes-v2-0-021c84d852e0@kernel.org> <20261104-work-procfs-bugfixes-v2-27-021c84d852e0@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 19:29:41 +0000 X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: sashiko-reviews@lists.linux.dev Sender: "kexec" X-Spam-Status: No, score=-10.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 X-Archived-By: > exitcode_proc_write() copies up to sizeof(buf) bytes of the write into > buf and hands it to simple_strtol() without terminating it. So > "echo -n 5" parses whatever the stack held after the '5', and a write of > seven bytes or more reads past the end of buf. Terminate the copy. >=20 > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") > Cc: stable@vger.kernel.org > Signed-off-by: Christian Brauner (Amutable) Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261104-work-procf= s-bugfixes-v2-0-021c84d852e0@kernel.org?part=3D27