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Ubuntu Security Notice USN-6680-2

Ubuntu Security Notice 6680-2 - 黄思聪 discovered that the NFC Controller Interface implementation in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service. It was discovered that a race condition existed in the Bluetooth subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

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Ubuntu Security Notice USN-6680-2
March 08, 2024

linux-azure, linux-azure-6.5, linux-hwe-6.5 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 23.10
  • Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:

  • linux-azure: Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-6.5: Linux kernel for Microsoft Azure cloud systems
  • linux-hwe-6.5: Linux hardware enablement (HWE) kernel

Details:

黄思聪 discovered that the NFC Controller Interface (NCI) implementation in
the Linux kernel did not properly handle certain memory allocation failure
conditions, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2023-46343)

It was discovered that a race condition existed in the Bluetooth subsystem
of the Linux kernel, leading to 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-2023-51779)

It was discovered that a race condition existed in the Rose X.25 protocol
implementation in the Linux kernel, leading to 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-2023-51782)

Alon Zahavi discovered that the NVMe-oF/TCP subsystem of the Linux kernel
did not properly handle connect command payloads in certain situations,
leading to an out-of-bounds read vulnerability. A remote attacker could use
this to expose sensitive information (kernel memory). (CVE-2023-6121)

Jann Horn discovered that the io_uring subsystem in the Linux kernel
contained an out-of-bounds access vulnerability. A local attacker could use
this to cause a denial of service (system crash). (CVE-2023-6560)

Dan Carpenter discovered that the netfilter subsystem in the Linux kernel
did not store data in properly sized memory locations. A local user could
use this to cause a denial of service (system crash). (CVE-2024-0607)

Supraja Sridhara, Benedict Schlüter, Mark Kuhne, Andrin Bertschi, and
Shweta Shinde discovered that the Confidential Computing framework in the
Linux kernel for x86 platforms did not properly handle 32-bit emulation on
TDX and SEV. An attacker with access to the VMM could use this to cause a
denial of service (guest crash) or possibly execute arbitrary code.
(CVE-2024-25744)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.10:
linux-image-6.5.0-1016-azure 6.5.0-1016.16
linux-image-6.5.0-1016-azure-fde 6.5.0-1016.16
linux-image-azure 6.5.0.1016.18
linux-image-azure-fde 6.5.0.1016.18

Ubuntu 22.04 LTS:
linux-image-6.5.0-1016-azure 6.5.0-1016.16~22.04.1
linux-image-6.5.0-1016-azure-fde 6.5.0-1016.16~22.04.1
linux-image-6.5.0-25-generic 6.5.0-25.25~22.04.1
linux-image-6.5.0-25-generic-64k 6.5.0-25.25~22.04.1
linux-image-azure 6.5.0.1016.16~22.04.1
linux-image-azure-fde 6.5.0.1016.16~22.04.1
linux-image-generic-64k-hwe-22.04 6.5.0.25.25~22.04.12
linux-image-generic-hwe-22.04 6.5.0.25.25~22.04.12
linux-image-virtual-hwe-22.04 6.5.0.25.25~22.04.12

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
https://ubuntu.com/security/notices/USN-6680-2
https://ubuntu.com/security/notices/USN-6680-1
CVE-2023-46343, CVE-2023-51779, CVE-2023-51782, CVE-2023-6121,
CVE-2023-6560, CVE-2024-0607, CVE-2024-25744

Package Information:
https://launchpad.net/ubuntu/+source/linux-azure/6.5.0-1016.16
https://launchpad.net/ubuntu/+source/linux-azure-6.5/6.5.0-1016.16~22.04.1
https://launchpad.net/ubuntu/+source/linux-hwe-6.5/6.5.0-25.25~22.04.1

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Ubuntu Security Notice USN-6639-1

Ubuntu Security Notice 6639-1 - It was discovered that a race condition existed in the ATM subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the AppleTalk networking subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

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Ubuntu Security Notice 6625-2 - Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service. Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver in the Linux kernel during device removal. A privileged attacker could use this to cause a denial of service.

Ubuntu Security Notice USN-6625-1

Ubuntu Security Notice 6625-1 - Marek Marczykowski-Górecki discovered that the Xen event channel infrastructure implementation in the Linux kernel contained a race condition. An attacker in a guest VM could possibly use this to cause a denial of service. Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver in the Linux kernel during device removal. A privileged attacker could use this to cause a denial of service.

Ubuntu Security Notice USN-6606-1

Ubuntu Security Notice 6606-1 - It was discovered that a race condition existed in the Bluetooth subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the CIFS network file system implementation in the Linux kernel did not properly validate the server frame size in certain situation, leading to an out-of-bounds read vulnerability. An attacker could use this to construct a malicious CIFS image that, when operated on, could cause a denial of service or possibly expose sensitive information.

io_uring __io_uaddr_map() Dangerous Multi-Page Handling

__io_uaddr_map() in io_uring suffers from dangerous handling of the multi-page region.

Debian Security Advisory 5594-1

Debian Linux Security Advisory 5594-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

Debian Security Advisory 5594-1

Debian Linux Security Advisory 5594-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

Debian Security Advisory 5593-1

Debian Linux Security Advisory 5593-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

Debian Security Advisory 5593-1

Debian Linux Security Advisory 5593-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

CVE-2023-6560: cve-details

An out-of-bounds memory access flaw was found in the io_uring SQ/CQ rings functionality in the Linux kernel. This issue could allow a local user to crash the system.

CVE-2023-6121: cve-details

An out-of-bounds read vulnerability was found in the NVMe-oF/TCP subsystem in the Linux kernel. This flaw allows a remote attacker to send a crafted TCP packet, triggering a heap-based buffer overflow that results in kmalloc data to be printed (and potentially leaked) to the kernel ring buffer (dmesg).

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