An information leak flaw was found due to uninitialized memory in the Linux kernel's TIPC protocol subsystem, in the way a user sends a TIPC datagram to one or more destinations. This flaw allows a local user to read some kernel memory. This issue is limited to no more than 7 bytes, and the user cannot control what is read. This flaw affects the Linux kernel versions prior to 5.17-rc1.

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5368-1 advisory.

    It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in     certain situations. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2022-23222)

    It was discovered that the network traffic control implementation in the Linux kernel contained a use-     after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2022-1055)

    Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly     restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain     administrative privileges. (CVE-2022-0492)

    Jrgen Gro discovered that the Xen subsystem within the Linux kernel did not adequately limit the     number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a     driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711,     CVE-2021-28712, CVE-2021-28713)

    Jrgen Gro discovered that the Xen network backend driver in the Linux kernel did not adequately limit     the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to     cause a denial of service (excessive kernel memory consumption) in the network backend domain.
    (CVE-2021-28714, CVE-2021-28715)

    Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the     size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A     local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary     code. (CVE-2021-39685)

    It was discovered that a race condition existed in the poll implementation in the Linux kernel, resulting     in a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2021-39698)

    It was discovered that the simulated networking device driver for the Linux kernel did not properly     initialize memory in certain situations. A local attacker could use this to expose sensitive information     (kernel memory). (CVE-2021-4135)

    Eric Biederman discovered that the cgroup process migration implementation in the Linux kernel did not     perform permission checks correctly in some situations. A local attacker could possibly use this to gain     administrative privileges. (CVE-2021-4197)

    Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device driver in the Linux kernel did     not properly validate meta-data coming from the device. A local attacker who can control an emulated     device can use this to cause a denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2021-43975)

    It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained     a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a     denial of service or possibly execute arbitrary code. (CVE-2021-44733)

    It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not     properly perform reference counting in some error conditions. A local attacker could possibly use this to     cause a denial of service (memory exhaustion). (CVE-2021-45095)

    It was discovered that the eBPF verifier in the Linux kernel did not properly perform bounds checking on     mov32 operations. A local attacker could use this to expose sensitive information (kernel pointer     addresses). (CVE-2021-45402)

    It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel did     not properly deallocate memory in some error conditions. A local attacker could possibly use this to cause     a denial of service (memory exhaustion). (CVE-2021-45480)

    It was discovered that the BPF subsystem in the Linux kernel did not properly track pointer types on     atomic fetch operations in some situations. A local attacker could use this to expose sensitive     information (kernel pointer addresses). (CVE-2022-0264)

    It was discovered that the TIPC Protocol implementation in the Linux kernel did not properly initialize     memory in some situations. A local attacker could use this to expose sensitive information (kernel     memory). (CVE-2022-0382)

    Samuel Page discovered that the Transparent Inter-Process Communication (TIPC) protocol implementation in     the Linux kernel contained a stack-based buffer overflow. A remote attacker could use this to cause a     denial of service (system crash) for systems that have a TIPC bearer configured. (CVE-2022-0435)

    It was discovered that the KVM implementation for s390 systems in the Linux kernel did not properly     prevent memory operations on PVM guests that were in non-protected mode. A local attacker could use this     to obtain unauthorized memory write access. (CVE-2022-0516)

    It was discovered that the ICMPv6 implementation in the Linux kernel did not properly deallocate memory in     certain situations. A remote attacker could possibly use this to cause a denial of service (memory     exhaustion). (CVE-2022-0742)

    It was discovered that the IPsec implementation in the Linux kernel did not properly allocate enough     memory when performing ESP transformations, leading to a heap-based buffer overflow. A local attacker     could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2022-27666)

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

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

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5337-1 advisory.

    It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in     certain situations. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2022-23222)

    Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly     restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain     administrative privileges. (CVE-2022-0492)

    Jrgen Gro discovered that the Xen subsystem within the Linux kernel did not adequately limit the     number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a     driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28711,     CVE-2021-28712, CVE-2021-28713)

    Jrgen Gro discovered that the Xen network backend driver in the Linux kernel did not adequately limit     the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to     cause a denial of service (excessive kernel memory consumption) in the network backend domain.
    (CVE-2021-28714, CVE-2021-28715)

    Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the     size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A     local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary     code. (CVE-2021-39685)

    It was discovered that a race condition existed in the poll implementation in the Linux kernel, resulting     in a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2021-39698)

    It was discovered that the simulated networking device driver for the Linux kernel did not properly     initialize memory in certain situations. A local attacker could use this to expose sensitive information     (kernel memory). (CVE-2021-4135)

    Eric Biederman discovered that the cgroup process migration implementation in the Linux kernel did not     perform permission checks correctly in some situations. A local attacker could possibly use this to gain     administrative privileges. (CVE-2021-4197)

    Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device driver in the Linux kernel did     not properly validate meta-data coming from the device. A local attacker who can control an emulated     device can use this to cause a denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2021-43975)

    It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained     a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a     denial of service or possibly execute arbitrary code. (CVE-2021-44733)

    It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not     properly perform reference counting in some error conditions. A local attacker could possibly use this to     cause a denial of service (memory exhaustion). (CVE-2021-45095)

    It was discovered that the eBPF verifier in the Linux kernel did not properly perform bounds checking on     mov32 operations. A local attacker could use this to expose sensitive information (kernel pointer     addresses). (CVE-2021-45402)

    It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel did     not properly deallocate memory in some error conditions. A local attacker could possibly use this to cause     a denial of service (memory exhaustion). (CVE-2021-45480)

    It was discovered that the BPF subsystem in the Linux kernel did not properly track pointer types on     atomic fetch operations in some situations. A local attacker could use this to expose sensitive     information (kernel pointer addresses). (CVE-2022-0264)

    It was discovered that the TIPC Protocol implementation in the Linux kernel did not properly initialize     memory in some situations. A local attacker could use this to expose sensitive information (kernel     memory). (CVE-2022-0382)

    Samuel Page discovered that the Transparent Inter-Process Communication (TIPC) protocol implementation in     the Linux kernel contained a stack-based buffer overflow. A remote attacker could use this to cause a     denial of service (system crash) for systems that have a TIPC bearer configured. (CVE-2022-0435)

    It was discovered that the KVM implementation for s390 systems in the Linux kernel did not properly     prevent memory operations on PVM guests that were in non-protected mode. A local attacker could use this     to obtain unauthorized memory write access. (CVE-2022-0516)

    It was discovered that the ICMPv6 implementation in the Linux kernel did not properly deallocate memory in     certain situations. A remote attacker could possibly use this to cause a denial of service (memory     exhaustion). (CVE-2022-0742)

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

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

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5278-1 advisory.

    It was discovered that the rlimit tracking for user namespaces in the Linux kernel did not properly     perform reference counting, leading to a use-after- free vulnerability. A local attacker could use this to     cause a denial of service or possibly execute arbitrary code. (CVE-2022-24122)

    It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in     certain situations. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2022-23222)

    Jeremy Cline discovered a use-after-free in the nouveau graphics driver of the Linux kernel during device     removal. A privileged or physically proximate attacker could use this to cause a denial of service (system     crash). (CVE-2020-27820)

    It was discovered that the Packet network protocol implementation in the Linux kernel contained a double-     free vulnerability. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2021-22600)

    Jrgen Gro discovered that the Xen subsystem within the Linux kernel did not adequately limit the     number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a     driver domain could use this to cause a denial of service in other guest VMs. (CVE-2021-28713)

    Jrgen Gro discovered that the Xen network backend driver in the Linux kernel did not adequately limit     the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to     cause a denial of service (excessive kernel memory consumption) in the network backend domain.
    (CVE-2021-28714, CVE-2021-28715)

    Szymon Heidrich discovered that the USB Gadget subsystem in the Linux kernel did not properly restrict the     size of control requests for certain gadget types, leading to possible out of bounds reads or writes. A     local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary     code. (CVE-2021-39685)

    It was discovered that the eBPF implementation in the Linux kernel contained a race condition around read-     only maps. A privileged attacker could use this to modify read-only maps. (CVE-2021-4001)

    Jann Horn discovered a race condition in the Unix domain socket implementation in the Linux kernel that     could result in a read-after-free. A local attacker could use this to cause a denial of service (system     crash) or possibly execute arbitrary code. (CVE-2021-4083)

    It was discovered that the simulated networking device driver for the Linux kernel did not properly     initialize memory in certain situations. A local attacker could use this to expose sensitive information     (kernel memory). (CVE-2021-4135)

    Kirill Tkhai discovered that the XFS file system implementation in the Linux kernel did not calculate size     correctly when pre-allocating space in some situations. A local attacker could use this to expose     sensitive information. (CVE-2021-4155)

    Eric Biederman discovered that the cgroup process migration implementation in the Linux kernel did not     perform permission checks correctly in some situations. A local attacker could possibly use this to gain     administrative privileges. (CVE-2021-4197)

    Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device driver in the Linux kernel did     not properly validate meta-data coming from the device. A local attacker who can control an emulated     device can use this to cause a denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2021-43975)

    It was discovered that the ARM Trusted Execution Environment (TEE) subsystem in the Linux kernel contained     a race condition leading to a use- after-free vulnerability. A local attacker could use this to cause a     denial of service or possibly execute arbitrary code. (CVE-2021-44733)

    It was discovered that the Phone Network protocol (PhoNet) implementation in the Linux kernel did not     properly perform reference counting in some error conditions. A local attacker could possibly use this to     cause a denial of service (memory exhaustion). (CVE-2021-45095)

    It was discovered that the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel did     not properly deallocate memory in some error conditions. A local attacker could possibly use this to cause     a denial of service (memory exhaustion). (CVE-2021-45480)

    It was discovered that the BPF subsystem in the Linux kernel did not properly track pointer types on     atomic fetch operations in some situations. A local attacker could use this to expose sensitive     information (kernel pointer addresses). (CVE-2022-0264)

    Sushma Venkatesh Reddy discovered that the Intel i915 graphics driver in the Linux kernel did not perform     a GPU TLB flush in some situations. A local attacker could use this to cause a denial of service or     possibly execute arbitrary code. (CVE-2022-0330)

    It was discovered that the TIPC Protocol implementation in the Linux kernel did not properly initialize     memory in some situations. A local attacker could use this to expose sensitive information (kernel     memory). (CVE-2022-0382)

    It was discovered that the VMware Virtual GPU driver in the Linux kernel did not properly handle certain     failure conditions, leading to a stale entry in the file descriptor table. A local attacker could use this     to expose sensitive information or possibly gain administrative privileges. (CVE-2022-22942)

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

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

ID	Name	Product	Family	Severity
159579	Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5368-1)	Nessus	Ubuntu Local Security Checks	high
159142	Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5337-1)	Nessus	Ubuntu Local Security Checks	high
157463	Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-5278-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2022-0382

medium

Tenable Plugins

high

high

high