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Tue, 4 Aug 2026 13:30:32 +0000 (GMT) Message-ID: <8c62f8c9-54ca-4fa2-a199-6d7cf0b26f25@linux.ibm.com> Date: Tue, 4 Aug 2026 15:30:32 +0200 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next] net/iucv: fix UAF in afiucv_netdev_event() To: Nagamani PV , davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: horms@kernel.org, linux-s390@vger.kernel.org, netdev@vger.kernel.org, twinkler@linux.ibm.com, heiko.carstens@de.ibm.com, hidayath@linux.ibm.com, borntraeger@linux.ibm.com, stable@vger.kernel.org References: <20260803182053.2355882-1-nagamani@linux.ibm.com> <9cda0e57-ce4b-428b-9385-743fdef02789@linux.ibm.com> <029629de-ee55-4b3e-a7fb-a693c2b1261d@linux.ibm.com> Content-Language: en-US From: Alexandra Winter In-Reply-To: <029629de-ee55-4b3e-a7fb-a693c2b1261d@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=E6P9Y6dl c=1 sm=1 tr=0 ts=6a71e97d cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=Hd0oI2eGEmljHiqTlHIA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=ZXulRonScM0A:10 X-Proofpoint-ORIG-GUID: SfIb4Tq2tIp9RVOLZ_W_vxkDqpX3sYkJ X-Proofpoint-GUID: UiRLhOHgbQ7vBwWdMETijgKFUdz2V27H X-Proofpoint-Spam-Info: AW1haW4tMjYwODA0MDEwNyBTYWx0ZWRfX8LaFXWYND0kg xzh7G+1UYCHoUkkU9fK7fsj6Jek6g49XPMadOQra+fYnD2owcnvmWWQlONhSSOrEmTIW63wSRg6 Y9fRfkhAHXvo7mYx4caS+2movBuFQeM= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA0MDEwNyBTYWx0ZWRfXzUoPi2ooSV+2 YTrOXqOe6hYmwKdKAQPL3TQAJJWnbcGfujLo7qEhK+iX4WU9lJUAtyn4cFaQE7deaN4ZmaMV0If naRuAsG/rRWMQedYdBunu/E3cKezpM0f+Ir9CKrKL81uh31nWpx66rfmSY0dSctrt/gt4YJPJDy P3brvgtc3VGFLRDDEaRijDZmg7oU9402y00bCyW5MIw1sAcH2Q9+fwAn5Mn9uCJQXNcuhSeQSb0 RvAEf7RvHRbJJs8STVNHxNZL8AJcLiFWKBaeJpFEuSBCbHdaZTaQDakPUpCqPbDDXtHo34PDI+i pMgDdyzmTrTTZ91ukZmgddBNDOc8IfrZy/H92GHjwTx+rDFTq+MYUNt52pS9onwz9tUhLm8lp7S m3EwHKQxzhViYo1liuivIMUxQafnvnxwRG+J6Mc0NWWBTNVHjK7BXp2EyVGj0TdNrG4lYeXrmvz MSo+ojltNNEdeublznw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-04_03,2026-08-03_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 suspectscore=0 adultscore=0 spamscore=0 malwarescore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608040107 On 04.08.26 14:52, Nagamani PV wrote: >> I'd rather continue to work on a more complete fix than take this one, >> but both ways are possible. >> > Understood. This patch addresses the UAF on iucv_sk_list traversal > specifically. The lock_sock() concern is at a different level and > could be a follow-up. > > Could you clarify your preference — take this as an incremental fix > with a follow-up for lock_sock(), or hold and work toward a combined > solution? I prefer to work on the combined solution