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Fri, 26 Jun 2026 09:40:44 -0700 (PDT) Received: from PeakBook-Mini.tail8e484.ts.net ([178.197.218.209]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-46c221d998esm25393443f8f.24.2026.06.26.09.40.43 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 26 Jun 2026 09:40:44 -0700 (PDT) From: Doruk Tan Ozturk To: Hans de Goede , Andy Shevchenko , Mauro Carvalho Chehab , Greg Kroah-Hartman Cc: Sakari Ailus , linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Doruk Tan Ozturk Subject: [PATCH 0/2] media: atomisp: validate user-supplied buffer sizes in two ioctl paths Date: Fri, 26 Jun 2026 18:40:40 +0200 Message-ID: X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Two ioctls in the AtomISP staging driver size a kernel buffer from one user-supplied field but use a *different* user-supplied field as the copy/store length, with no cross-check, allowing a kernel heap/ISP-memory out-of-bounds write: 1) atomisp_v4l2_framebuffer_to_css_frame(): frame allocated from width/height/format, but hmm_store() uses arg->fmt.sizeimage. 2) atomisp_cp_dvs_6axis_config(): DVS 6-axis table allocated from the stream grid, but copy_from_compatible() uses the user width/height (both ISP2401 and ISP2400 paths). Both add a bound check before the copy. Found by 0sec's autonomous vulnerability analysis (https://0sec.ai); identified by static analysis, not yet runtime-reproduced (Intel Atom ISP hardware required). Doruk Tan Ozturk (2): media: atomisp: validate sizeimage against the allocated frame in framebuffer-to-CSS media: atomisp: bound DVS 6-axis table dimensions to the allocated config .../staging/media/atomisp/pci/atomisp_cmd.c | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+) -- 2.43.0