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Mon, 13 Apr 2026 18:00:53 -0700 (PDT) From: Adrian Wowk To: valentina.manea.m@gmail.com, shuah@kernel.org Cc: i@zenithal.me, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Adrian Wowk Subject: [PATCH 0/2] usbip: vhci_hcd: fix NULL deref and NR_HCS upper bound Date: Mon, 13 Apr 2026 20:00:48 -0500 Message-ID: <20260414010050.158064-1-dev@adrianwowk.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit These two patches fix a NULL pointer dereference in vhci_sysfs.c triggered when a VHCI host controller fails to probe, and tighten the Kconfig upper bound for USBIP_VHCI_NR_HCS to reflect the real maximum imposed by USB_MAXBUS. Tested on Ubuntu 6.8.0-110-generic (6.8.12) on a Dell PowerEdge R640, issue is reproducible with CONFIG_USBIP_VHCI_NR_HCS > 32 or potentially lower if there is already other USB hardware connected. Adrian Wowk (2): usbip: vhci_hcd: fix NULL deref in status_show_vhci usbip: vhci_hcd: reduce CONFIG_USBIP_VHCI_NR_HCS upper bound to 32 drivers/usb/usbip/Kconfig | 2 +- drivers/usb/usbip/vhci_sysfs.c | 52 +++++++++++++++++++--------------- 2 files changed, 30 insertions(+), 24 deletions(-) -- 2.53.0