Use-after-free vulnerability in the ffs_user_copy_worker function in drivers/usb/gadget/function/f_fs.c in the Linux kernel before 4.5.3 allows local users to gain privileges by accessing an I/O data structure after a certain callback call.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003434 advisory.

    Use-after-free vulnerability in the ffs_user_copy_worker function in drivers/usb/gadget/function/f_fs.c in     the Linux kernel before 4.5.3 allows local users to gain privileges by accessing an I/O data structure     after a certain callback call.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002875 advisory.

    Use-after-free vulnerability in the ffs_user_copy_worker function in drivers/usb/gadget/function/f_fs.c in     the Linux kernel before 4.5.3 allows local users to gain privileges by accessing an I/O data structure     after a certain callback call.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000887 advisory.

    Use-after-free vulnerability in the ffs_user_copy_worker function in drivers/usb/gadget/function/f_fs.c in     the Linux kernel before 4.5.3 allows local users to gain privileges by accessing an I/O data structure     after a certain callback call.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - The ims_pcu_get_cdc_union_desc function in     drivers/input/misc/ims-pcu.c in the Linux kernel,     through 4.13.11, allows local users to cause a denial     of service (ims_pcu_parse_cdc_data out-of-bounds read     and system crash) or possibly have unspecified other     impact via a crafted USB device.(CVE-2017-16645i1/4%0

  - It was found that due to excessive files_lock locking,     a soft lockup could be triggered in the Linux kernel     when performing asynchronous I/O operations. A local,     unprivileged user could use this flaw to crash the     system.(CVE-2014-8172i1/4%0

  - A flaw was discovered in the kernel's collect_mounts     function. If the kernel's audit subsystem called     collect_mounts to audit an unmounted path, it could     panic the system. With this flaw, an unprivileged user     could call umount(MNT_DETACH) to launch a     denial-of-service attack.(CVE-2015-4177i1/4%0

  - A flaw was found in the way the Linux kernel's floppy     driver handled user space provided data in certain     error code paths while processing FDRAWCMD IOCTL     commands. A local user with write access to /dev/fdX     could use this flaw to free (using the kfree()     function) arbitrary kernel memory. (CVE-2014-1737,     Important) was found that the Linux kernel's floppy     driver leaked internal kernel memory addresses to user     space during the processing of the FDRAWCMD IOCTL     command. A local user with write access to /dev/fdX     could use this flaw to obtain information about the     kernel heap arrangement. (CVE-2014-1738, Low)Note: A     local user with write access to /dev/fdX could use     these two flaws (CVE-2014-1737 in combination with     CVE-2014-1738) to escalate their privileges on the     system.(CVE-2014-1738i1/4%0

  - A reference counter leak in Linux kernel in     ipxitf_ioctl function was found which results in a use     after free vulnerability that's triggerable from     unprivileged userspace when IPX interface is     configured.(CVE-2017-7487i1/4%0

  - The x25_recvmsg function in net/x25/af_x25.c in the     Linux kernel before 3.12.4 updates a certain length     value without ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7271i1/4%0

  - An inode data validation error was found in Linux     kernels built with UDF file system (CONFIG_UDF_FS)     support. An attacker able to mount a     corrupted/malicious UDF file system image could cause     the kernel to crash.(CVE-2015-4167i1/4%0

  - Double free vulnerability in the ioctx_alloc function     in fs/aio.c in the Linux kernel before 3.12.4 allows     local users to cause a denial of service (system crash)     or possibly have unspecified other impact via vectors     involving an error condition in the aio_setup_ring     function.(CVE-2013-7348i1/4%0

  - A flaw was found in the Linux kernel's implementation     of setsockopt for the SO_{SND|RCV}BUFFORCE setsockopt()     system call. Users with non-namespace CAP_NET_ADMIN are     able to trigger this call and create a situation in     which the sockets sendbuff data size could be negative.
    This could adversely affect memory allocations and     create situations where the system could crash or cause     memory corruption.(CVE-2016-9793i1/4%0

  - Use-after-free vulnerability in the     ffs_user_copy_worker function in     drivers/usb/gadget/function/f_fs.c in the Linux kernel     before 4.5.3 allows local users to gain privileges by     accessing an I/O data structure after a certain     callback call. Due to the nature of the flaw, privilege     escalation cannot be fully ruled out, although we     believe it is unlikely.(CVE-2016-7912i1/4%0

  - A flaw was found in the way the get_dumpable() function     return value was interpreted in the ptrace subsystem of     the Linux kernel. When 'fs.suid_dumpable' was set to 2,     a local, unprivileged local user could use this flaw to     bypass intended ptrace restrictions and obtain     potentially sensitive information.(CVE-2013-2929i1/4%0

  - A DoS flaw was found for a Linux kernel built for the     x86 architecture which had the KVM virtualization     support(CONFIG_KVM) enabled. The kernel would be     vulnerable to a NULL pointer dereference flaw in Linux     kernel's kvm_apic_has_events() function while doing an     ioctl. An unprivileged user able to access the     '/dev/kvm' device could use this flaw to crash the     system kernel.(CVE-2015-4692i1/4%0

  - The intr function in sound/oss/msnd_pinnacle.c in the     Linux kernel through 4.11.7 allows local users to cause     a denial of service (over-boundary access) or possibly     have unspecified other impact by changing the value of     a message queue head pointer between two kernel reads     of that value, aka a 'double fetch'     vulnerability.(CVE-2017-9986i1/4%0

  - sound/soc/msm/qdsp6v2/msm-audio-effects-q6-v2.c in the     MSM QDSP6 audio driver for the Linux kernel 3.x, as     used in Qualcomm Innovation Center (QuIC) Android     contributions for MSM devices and other products,     allows attackers to cause a denial of service (buffer     over-read) or possibly have unspecified other impact     via a crafted application that makes an ioctl call     specifying many commands.(CVE-2016-2064i1/4%0

  - The digi_port_init function in     drivers/usb/serial/digi_acceleport.c in the Linux     kernel before 4.5.1 allows physically proximate     attackers to cause a denial of service (NULL pointer     dereference and system crash) via a crafted endpoints     value in a USB device descriptor.(CVE-2016-3140i1/4%0

  - In the Linux kernel through 4.14.13, the     rds_cmsg_atomic function in net/rds/rdma.c mishandles     cases where page pinning fails or an invalid address is     supplied, leading to an rds_atomic_free_op NULL pointer     dereference.(CVE-2018-5333i1/4%0

  - Multiple buffer underflows in the XFS implementation in     the Linux kernel through 3.12.1 allow local users to     cause a denial of service (memory corruption) or     possibly have unspecified other impact by leveraging     the CAP_SYS_ADMIN capability for a (1)     XFS_IOC_ATTRLIST_BY_HANDLE or (2)     XFS_IOC_ATTRLIST_BY_HANDLE_32 ioctl call with a crafted     length value, related to the xfs_attrlist_by_handle     function in fs/xfs/xfs_ioctl.c and the     xfs_compat_attrlist_by_handle function in     fs/xfs/xfs_ioctl32.c.(CVE-2013-6382i1/4%0

  - In the Linux kernel through 5.0.2, the function     inotify_update_existing_watch() in     fs/notify/inotify/inotify_user.c neglects to call     fsnotify_put_mark() with IN_MASK_CREATE after     fsnotify_find_mark(), which will cause a memory leak     (aka refcount leak). Finally, this will cause a denial     of service.(CVE-2019-9857i1/4%0

  - It was found that stacking a file system over procfs in     the Linux kernel could lead to a kernel stack overflow     due to deep nesting, as demonstrated by mounting     ecryptfs over procfs and creating a recursion by     mapping /proc/environ. An unprivileged, local user     could potentially use this flaw to escalate their     privileges on the system.(CVE-2016-1583i1/4%0

  - A heap-based buffer overflow vulnerability was found in     the Linux kernel's hiddev driver. This flaw could allow     a local attacker to corrupt kernel memory, possible     privilege escalation or crashing the     system.(CVE-2016-5829i1/4%0

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
287892	Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003434)	Nessus	Unity Linux Local Security Checks	high
287791	Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002875)	Nessus	Unity Linux Local Security Checks	high
283830	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000887)	Nessus	Unity Linux Local Security Checks	high
124988	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1535)	Nessus	Huawei Local Security Checks	high

Detections

Analytics

CVE-2016-7912

high

Tenable Plugins

high

high

high

high