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Fri, 03 Jul 2026 03:36:22 -0700 (PDT) X-Received: by 2002:a17:903:3c6b:b0:2c9:d56d:afa3 with SMTP id d9443c01a7336-2cacb070082mr42779985ad.15.1783074982316; Fri, 03 Jul 2026 03:36:22 -0700 (PDT) Received: from [10.152.199.23] ([202.46.23.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-13b446a766asm13555217c88.7.2026.07.03.03.36.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 03 Jul 2026 03:36:21 -0700 (PDT) Message-ID: <20d52df0-a33c-48da-8f62-9adb7c77eea0@oss.qualcomm.com> Date: Fri, 3 Jul 2026 16:06:17 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get() To: Dmitry Morgun , Jeff Johnson Cc: linux-wireless@vger.kernel.org, ath11k@lists.infradead.org, linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org, stable@vger.kernel.org References: <20260530114252.42615-1-d.morgun@ispras.ru> From: Rameshkumar Sundaram Content-Language: en-US In-Reply-To: <20260530114252.42615-1-d.morgun@ispras.ru> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: hHkL9e7UZf_zLJ2Tx3HDMMEQtXz4E8G2 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzAzMDEwMiBTYWx0ZWRfX/Q1ZrZBLe3EI IggPXXD5cOSlwuO6dX75TsJ0d7/qR+CwDMdzHZATQyCI8fhRf4bfAVRB4kRgWVBZB9kOpo/JncE atEY6ZfolyePijJbGK1bIx+rACYdNjY= X-Authority-Analysis: v=2.4 cv=a6QAM0SF c=1 sm=1 tr=0 ts=6a4790a7 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=j4ogTh8yFefVWWEFDRgCtg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=HH5vDtPzAAAA:8 a=xjQjg--fAAAA:8 a=EUspDBNiAAAA:8 a=YRM84PAP6wGYPlwToDIA:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 a=uG9DUKGECoFWVXl0Dc02:22 a=QM_-zKB-Ew0MsOlNKMB5:22 a=L4vkcYpMSA5nFlNZ2tk3:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzAzMDEwMiBTYWx0ZWRfX93gFVycQkUSg ZGdFF0K6QNGqxbnjGr5oa7OVAKCPxT450mslzK1V21UhsopY0ogI3A0utTJ7LZhS+CymthLr2fZ zW2yBoUfeW4O71O/TV5kz/5k3scF+I7uRmuuYH9B5ADoFECs2CcUKz5kh4Jnc9LxVXBKiQnpFbM khyUlos1F1NrNcPdvfoYjzVu3j0buAHGl7X/o8AVrI0Jsrh5NSp97fVkORFILRKf3rd69OhYCGj 14ZW3AjEiQmkb2tAwaVXDzazWYONirAvMNsBpuLgStHZUbDQbmD92oNzlD2/73TYlhG3kVZP5Va B1YICtsHA2MCH4anp4bSe9Ul0yzT1lQll4WjHwQXavzVS1dhID58xoIL8faDh17JkHkpKdW8N95 kp+BMxXKg9hTwanGrS5oJyuvcbgXQ2bFXxExdVmHa2dKaDOWAL1uzPX2xJucTsReZsmyG8YjqM5 ICzSBtdBk11qtZRnq0g== X-Proofpoint-ORIG-GUID: hHkL9e7UZf_zLJ2Tx3HDMMEQtXz4E8G2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-07-03_02,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 bulkscore=0 impostorscore=0 phishscore=0 spamscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607030102 On 5/30/2026 5:12 PM, Dmitry Morgun wrote: > When the first entry in msdu_details has a zero buffer address, > the code accesses msdu_details[i - 1] with i == 0, causing a > buffer underflow. > > Fix similarly to ath12k_wifi7_hal_rx_msdu_list_get() by adding > a separate check for i == 0 before the main condition to prevent > the out-of-bounds access. > > Found by Linux Verification Center (linuxtesting.org) with SVACE. > > Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices") > Signed-off-by: Dmitry Morgun Reviewed-by: Rameshkumar Sundaram