Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-8961-1)

"The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8961-1 advisory. Duoming Zhou discovered race conditions in the AX.25 amateur radio protocol implementation in the Linux kernel, leading to use-after-free...

USN-8959-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - USB Gadget drivers; - Memory management; - Multiple devices driver; - ARM64 architecture; - EROFS file system; -...

USN-8960-1 linux-oem-7.0 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - USB Gadget drivers; - Memory management; - Multiple devices driver; - ARM64 architecture; - EROFS file system; -...

USN-8960-1: Linux kernel (OEM) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - USB Gadget drivers; - Memory management; - Multiple devices driver; - ARM64 architecture; - EROFS file system; -...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ftcm: keep port count until LUN teardown completes tcmusbgdropnexus permits session removal once tpgportcount reaches zero. However, usbgportunlink currently decrements that count from the fabricpreunlink callback,...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fmidi: cancel pending IN work before freeing the midi object The fmidi driver embeds a work item midi-work whose handler, fmidiinwork, dereferences the enclosing struct fmidi through containerof. This work is armed...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Prevent deadlock during ep0 read loop Currently, ffsep0read holds ffs-mutex when it prepares to go to sleep waiting for an event. When no setup events are pending, it calls waiteventinterruptibleexclusivelockedi...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ftcm: fix deadlock in usbgmaketpg usbgmaketpg holds a deplock while calling configfsdependitemunlocked, which acquires the configfs root inode lock when operating across subsystems. This creates a circular lock...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: uvc: fix dangling pointers in uvcfunctionbind and uvcfunctionunbind In the error path of uvcfunctionbind, we use usbepfreerequest which uses uvc-controlreq but does not set it to NULL afterwards. Thus, uvc-controlreq...

d-os-descriptor

d-os-descriptor Summary The USB Gadget Subsystem includes security issues in the OS descriptor handling section of compositesetup function composite.c. Processing of properly crafted control transfer request messages result in device crash due to null pointer dereference or memory corruption...

android-gadget

android-gadget Summary Certain revisions of the Linux kernel used in Android are affected by issue CVE-2021-39685. Detailed information and a POC for CVE-2021-39685 may be found in the inspector-gadget repository. This repository includes POC targeting few Android specific USB gadgets including:...

rndis-co

RNDIS-CO Summary The RNDIS USB Gadget may be exploited to dump contents of kernel memory space via packet filter update mechanism. Description The RNDISMSGSET usb control transfer request handler - rndissetresponse calls genndissetresp passing a buffer pointer offset by BufOffset + 8. The BufOffs...

CVE-2019-14079

USB device fuzzing on Android CVE-2019-14079 This blog post is about a simple bug I found in my android deviceMI A2 - runs stock android using USB device fuzzing and was marked as high severity by google. The bug was in Qualcomm USB driver which was later patched and disclosed in March 2020 Andro...

f_hid-4.14-backports

fhid backports for Linux 4.14.190 SM-A525F Three fixes to drivers/usb/gadget/function/fhid.c, carried by hand to a 4.14.190 Android vendor kernel and verified on the device they run on. 4.14 is end-of-life. No stable backport exists for any of these, and none is coming. That is the whole reason...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-146669)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-146669 advisory. In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Fix Use-After-Free in AIO error path In ffsepfilewriteiter and ffsepfilereadite...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-146626)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-146626 advisory. In the Linux kernel, the following vulnerability has been resolved: USB: gadget: ffs: fix mm lifetime handling iodata stores a pointer to the submitting task's...

CVE-2026-80854

A flaw was found in the Linux kernel's ftcm USB gadget module. A race condition can occur during the teardown of a Logical Unit Number LUN when it overlaps with a session removal. This timing issue can lead to a use-after-free vulnerability, causing the system to crash and resulting in a Denial o...

CVE-2026-114353

Hidden functionality undocumented backdoor in the root-privileged 'assistant' daemon in DJI CrystalSky ZS600C firmware v0.3.9.7 through v0.6.6.9 on Android allows a physically-present attacker with USB access to execute arbitrary OS commands as root by sending the hard-coded magic string...

CVE-2026-114353 DJI CrystalSky ZS600C USB-gadget backdoor allows root command execution

Hidden functionality undocumented backdoor in the root-privileged 'assistant' daemon in DJI CrystalSky ZS600C firmware v0.3.9.7 through v0.6.6.9 on Android allows a physically-present attacker with USB access to execute arbitrary OS commands as root by sending the hard-coded magic string...

EUVD-2026-108980

Hidden functionality undocumented backdoor in the root-privileged 'assistant' daemon in DJI CrystalSky ZS600C firmware v0.3.9.7 through v0.6.6.9 on Android allows a physically-present attacker with USB access to execute arbitrary OS commands as root by sending the hard-coded magic string...