EUVD-2026-86081

In the Linux kernel, the following vulnerability has been resolved: usb: core: hcd: fix possible deadlock in rh control transfers From within the SCSI error handler memory allocations must not trigger IO. Handling errors in UAS and the storage driver may involve resetting a device. The thread doi...

CVE-2026-97483: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: usb: core: hcd: fix possible deadlock in rh control transfers From within the SCSI error handler memory allocations must not trigger IO. Handling errors in UAS and the storage driver may involve resetting a device. The thread doi...

PT-2026-98064

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the xhci component where new commands could be queued on the command ring even when the xHC is marked as inaccessible. This state is managed by the HCD FLAG HW...

PT-2026-104956

In the Linux kernel, the following vulnerability has been resolved: usb: core: hcd: fix possible deadlock in rh control transfers From within the SCSI error handler memory allocations must not trigger IO. Handling errors in UAS and the storage driver may involve resetting a device. The thread doi...

PT-2026-98103

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL pointer dereference exists in the usbip module within the vhci hcd component. The function status show vhci fails to verify if the hcd pointer returned by platform get drvdata is...

CVE-2026-97483

In the Linux kernel, the following vulnerability has been resolved: usb: core: hcd: fix possible deadlock in rh control transfers From within the SCSI error handler memory allocations must not trigger IO. Handling errors in UAS and the storage driver may involve resetting a device. The thread doi...

PT-2026-104949

In the Linux kernel, the following vulnerability has been resolved: xhci: Prevent queuing new commands if xhci is inaccessible Refuse to queue a new command on the command ring if xHC is marked inaccessible with the HCD FLAG HW ACCESSIBLE. HCD FLAG HW ACCESSIBLE is set and cleared in suspend and...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: USB: dummy-hcd: Fixed locking/synchronization errors Syzbot testing was able to cause an addressing exception and a crash in the usbgadgetudcreset routine in drivers/usb/gadgets/udc/core.c. This occurred because the routine wa...

Astra Linux – Vulnerability in Qemu

A divide-by-zero issue was discovered in dwc2handlepacket in hw/usb/hcd-dwc2.c, within the hcd-dwc2 USB host controller emulator in QEMU. A malicious guest could exploit this flaw to crash the QEMU process on the host, resulting in a denial of service...

Linux USB driver Heap Buffer Overflow DoS

The vulnerability of the dwc2hcdurbdequeue function in the driver module/dwc2/hcd.c of the Linux operating system’s USB device driver framework is related to the dereferencing of a pointer with an expired validity period. Exploiting this vulnerability could allow an attacker to compromise the...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100322)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100322 advisory. In the Linux kernel, the following vulnerability has been resolved: USB: dummy-hcd: Fix locking/synchronization error Syzbot testing was able to provoke an addressin...

CVE-2026-68370

A flaw was found in the Linux kernel's USB gadget dummy Host Controller Driver HCD. A race condition can occur when a shared USB request object fiforeq is prematurely reused before its completion callback has finished. This can lead to the overwriting of the callback pointer, causing a general...

EUVD-2026-55471

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: dummyhcd: prevent fiforeq reuse during giveback dummyhcd embeds a single shared usbrequest dum-fiforeq that the "emulated single-request FIFO" fast-path in dummyqueue reuses for small IN transfers: it copies the...

CVE-2026-68370

CVE-2026-68370 affects the Linux kernel USB gadget dummy_hcd path. A race condition reuses a shared usb_request (fifo_req) before its completion callback finishes, allowing overwriting of the callback pointer and causing a general protection/page fault in dummy_timer. The mitigation adds a fifo_r...

CVE-2026-68370 usb: gadget: dummy_hcd: prevent fifo_req reuse during giveback

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: dummyhcd: prevent fiforeq reuse during giveback dummyhcd embeds a single shared usbrequest dum-fiforeq that the "emulated single-request FIFO" fast-path in dummyqueue reuses for small IN transfers: it copies the...

PT-2026-69770

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the dummy hcd component of the USB gadget subsystem where a shared usb request dum-fifo req can be reused prematurely during the giveback process. The dummy queue...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: Fix for role switching during resume If the role changes while the system is suspended, the cdns3 driver switches to the new mode during resume. However, switching to the host mode in this context causes a NULL pointe...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: usb: xhciplatremove: avoid NULL dereference Since commit 4736ebd7fcaff1eb8481c140ba494962847d6e0a “usb: host: xhci-plat: omit shared hcd if either root hub has no ports”, xhci-sharedhcd can be NULL, which causes the following...

CVE-2026-43327

A flaw was found in the Linux kernel's USB dummy-hcd driver. A race condition between a USB reset operation and a driver unbind operation can lead to a synchronization error. This allows a local attacker with physical access to a USB device to trigger an addressing exception, causing a system cra...

Medium: qemu

Issue Overview: hcd-ohci: infinite loop NOTE: Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/129922c2bc398b656a9180150e667f98fdf0d402 v11.0.0-rc1 CVE-2026-3890 virtio-scsi request size mismatch NOTE: Fixed by:...