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Mon, 24 Aug 2026 15:56:34 -0700 (PDT) Received: from fedora ([202.47.63.86]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-328272232besm1527287eec.21.2026.08.24.15.56.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Aug 2026 15:56:34 -0700 (PDT) From: Muhammad Bilal To: jorge.lopez2@hp.com, hansg@kernel.org, ilpo.jarvinen@linux.intel.com, linux@weissschuh.net Cc: platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Muhammad Bilal Subject: [PATCH 0/2] platform/x86: hp-bioscfg: fix OOB reads and buffer desynchronization in buffer parsers Date: Tue, 25 Aug 2026 03:56:08 +0500 Message-ID: <20260824225610.18471-1-meatuni001@gmail.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series addresses out-of-bounds reads and buffer accounting issues in hp-bioscfg's WMI binary buffer parsers (hp_get_integer_from_buffer() and hp_get_string_from_buffer()): 1. Patch 1 fixes an out-of-bounds read and buffer size desynchronization in hp_get_integer_from_buffer() when reading integers from unaligned buffer addresses where PTR_ALIGN introduces padding. 2. Patch 2 fixes two heap out-of-bounds reads (passing byte count instead of wchar_t count to utf16s_to_utf8s(), and loop bound expansion in the escape-counting loop), a 2-byte under-allocation check, and buffer pointer/length desynchronization in hp_get_string_from_buffer(). Tested on HP hardware with CONFIG_KASAN=y. Muhammad Bilal (2): platform/x86: hp-bioscfg: fix OOB read in hp_get_integer_from_buffer() on unaligned input platform/x86: hp-bioscfg: fix heap OOB read and buffer desync in hp_get_string_from_buffer() drivers/platform/x86/hp/hp-bioscfg/bioscfg.c | 36 +++++++++++--------- 1 file changed, 20 insertions(+), 16 deletions(-) -- 2.43.0