Message ID | 20230920123612.16914-4-pstanner@redhat.com (mailing list archive) |
---|---|
State | Mainlined |
Commit | 569c8d82f95eb5993c84fb61a649a9c4ddd208b3 |
Headers | show
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([2a01:599:906:7772:a505:d891:dcff:9565]) by smtp.gmail.com with ESMTPSA id u17-20020a1709064ad100b0098ce63e36e9sm9447247ejt.16.2023.09.20.05.36.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Sep 2023 05:36:47 -0700 (PDT) From: Philipp Stanner <pstanner@redhat.com> To: Kees Cook <keescook@chromium.org>, Andy Shevchenko <andy@kernel.org>, Eric Biederman <ebiederm@xmission.com>, Christian Brauner <brauner@kernel.org>, David Disseldorp <ddiss@suse.de>, Luis Chamberlain <mcgrof@kernel.org>, Siddh Raman Pant <code@siddh.me>, Nick Alcock <nick.alcock@oracle.com>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Maxime Ripard <mripard@kernel.org>, Thomas Zimmermann <tzimmermann@suse.de>, David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>, Zack Rusin <zackr@vmware.com> Cc: VMware Graphics Reviewers <linux-graphics-maintainer@vmware.com>, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, linux-hardening@vger.kernel.org, Philipp Stanner <pstanner@redhat.com>, David Airlie <airlied@redhat.com>, Baoquan He <bhe@redhat.com> Subject: [PATCH v3 2/5] kernel: kexec: copy user-array safely Date: Wed, 20 Sep 2023 14:36:10 +0200 Message-ID: <20230920123612.16914-4-pstanner@redhat.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230920123612.16914-2-pstanner@redhat.com> References: <20230920123612.16914-2-pstanner@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII"; x-default=true Precedence: bulk List-ID: <linux-hardening.vger.kernel.org> X-Mailing-List: linux-hardening@vger.kernel.org |
Series |
Introduce new wrappers to copy user-arrays
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expand
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diff --git a/kernel/kexec.c b/kernel/kexec.c index 107f355eac10..8f35a5a42af8 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -247,7 +247,7 @@ SYSCALL_DEFINE4(kexec_load, unsigned long, entry, unsigned long, nr_segments, ((flags & KEXEC_ARCH_MASK) != KEXEC_ARCH_DEFAULT)) return -EINVAL; - ksegments = memdup_user(segments, nr_segments * sizeof(ksegments[0])); + ksegments = memdup_array_user(segments, nr_segments, sizeof(ksegments[0])); if (IS_ERR(ksegments)) return PTR_ERR(ksegments);