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b=FFi3Cym8kW6JbEeinVpPS92Ju7Lb/3Z15+6L+Uf+jpdesxufIJ6LE4bmCsuYKUO7tagZxQ wB3iVSmc3OjNSeTb7TvSsQ/fiY5Sz3BrE/qkhmcFBj73oOIBjSVWoCYwsTJlJcNI1FFhPW wBFgI48AO9LuiZ/VXuw6Unoy8U0hdns= X-MC-Unique: AJf2Kf0_Oeyn60wIWVni-Q-1 From: Eduardo Habkost To: qemu-devel@nongnu.org Subject: [PATCH for-5.2] util/cutils: Fix bounds check at freq_to_str() Date: Thu, 29 Oct 2020 16:38:50 -0400 Message-Id: <20201029203850.434351-1-ehabkost@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=ehabkost@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=63.128.21.124; envelope-from=ehabkost@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/29 01:47:28 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Alistair Francis , Luc Michel , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Fix bounds check for idx at freq_to_str(), to actually ensure idx never goes beyond the last element of the suffixes array. Reported-by: Coverity (CID 1435957: OVERRUN) Suggested-by: Peter Maydell Signed-off-by: Eduardo Habkost Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- util/cutils.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/util/cutils.c b/util/cutils.c index c395974fab..0d9261e1e5 100644 --- a/util/cutils.c +++ b/util/cutils.c @@ -891,7 +891,7 @@ char *freq_to_str(uint64_t freq_hz) double freq =3D freq_hz; size_t idx =3D 0; =20 - while (freq >=3D 1000.0 && idx < ARRAY_SIZE(suffixes)) { + while (freq >=3D 1000.0 && idx < ARRAY_SIZE(suffixes) - 1) { freq /=3D 1000.0; idx++; } --=20 2.28.0