CWE
119 476
Advisory Published

USN-6532-1: Linux kernel vulnerabilities

First published: Tue Dec 05 2023(Updated: )

Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information. (CVE-2023-20593) Yu Hao discovered that the UBI driver in the Linux kernel did not properly check for MTD with zero erasesize during device attachment. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-31085) Lucas Leong discovered that the netfilter subsystem in the Linux kernel did not properly validate some attributes passed from userspace. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information (kernel memory). (CVE-2023-39189) Sunjoo Park discovered that the netfilter subsystem in the Linux kernel did not properly validate u32 packets content, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-39192) Lucas Leong discovered that the netfilter subsystem in the Linux kernel did not properly validate SCTP data, leading to an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-39193) Lucas Leong discovered that the Netlink Transformation (XFRM) subsystem in the Linux kernel did not properly handle state filters, leading to an out- of-bounds read vulnerability. A privileged local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-39194) Kyle Zeng discovered that the IPv4 implementation in the Linux kernel did not properly handle socket buffers (skb) when performing IP routing in certain circumstances, leading to a null pointer dereference vulnerability. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2023-42754) It was discovered that the USB ENE card reader driver in the Linux kernel did not properly allocate enough memory when processing the storage device boot blocks. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-45862) Manfred Rudigier discovered that the Intel(R) PCI-Express Gigabit (igb) Ethernet driver in the Linux kernel did not properly validate received frames that are larger than the set MTU size, leading to a buffer overflow vulnerability. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-45871) Budimir Markovic discovered that the perf subsystem in the Linux kernel did not properly handle event groups, leading to an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-5717)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.4.0-1126-kvm<4.4.0-1126.136
4.4.0-1126.136
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-4.4.0-1163-aws<4.4.0-1163.178
4.4.0-1163.178
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-4.4.0-248-generic<4.4.0-248.282
4.4.0-248.282
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-4.4.0-248-lowlatency<4.4.0-248.282
4.4.0-248.282
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-aws<4.4.0.1163.167
4.4.0.1163.167
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-generic<4.4.0.248.254
4.4.0.248.254
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-generic-lts-xenial<4.4.0.248.254
4.4.0.248.254
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-kvm<4.4.0.1126.123
4.4.0.1126.123
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-lowlatency<4.4.0.248.254
4.4.0.248.254
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-lowlatency-lts-xenial<4.4.0.248.254
4.4.0.248.254
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-virtual<4.4.0.248.254
4.4.0.248.254
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-virtual-lts-xenial<4.4.0.248.254
4.4.0.248.254
Ubuntu Ubuntu=16.04
All of
ubuntu/linux-image-4.4.0-1125-aws<4.4.0-1125.131
4.4.0-1125.131
Ubuntu Ubuntu=14.04
All of
ubuntu/linux-image-4.4.0-248-generic<4.4.0-248.282~14.04.1
4.4.0-248.282~14.04.1
Ubuntu Ubuntu=14.04
All of
ubuntu/linux-image-4.4.0-248-lowlatency<4.4.0-248.282~14.04.1
4.4.0-248.282~14.04.1
Ubuntu Ubuntu=14.04
All of
ubuntu/linux-image-aws<4.4.0.1125.122
4.4.0.1125.122
Ubuntu Ubuntu=14.04
All of
ubuntu/linux-image-generic-lts-xenial<4.4.0.248.215
4.4.0.248.215
Ubuntu Ubuntu=14.04
All of
ubuntu/linux-image-lowlatency-lts-xenial<4.4.0.248.215
4.4.0.248.215
Ubuntu Ubuntu=14.04
All of
ubuntu/linux-image-virtual-lts-xenial<4.4.0.248.215
4.4.0.248.215
Ubuntu Ubuntu=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6532-1?

    The severity of USN-6532-1 is not specified.

  • How does the Linux kernel vulnerability CVE-2023-20593 affect AMD processors?

    The CVE-2023-20593 vulnerability in the Linux kernel can expose sensitive information on some AMD processors due to improper handling of speculative execution.

  • How does the Linux kernel vulnerability CVE-2023-39194 affect the UBI driver?

    The CVE-2023-39194 vulnerability in the Linux kernel can lead to improper checking in the UBI driver.

  • What is the recommended remedy for the Linux kernel vulnerability in Ubuntu 16.04 with package linux-image-4.4.0-1126-kvm?

    The recommended remedy for the Linux kernel vulnerability in Ubuntu 16.04 with package linux-image-4.4.0-1126-kvm is to install version 4.4.0-1126.136.

  • What is the recommended remedy for the Linux kernel vulnerability in Ubuntu 14.04 with package linux-image-generic-lts-xenial?

    The recommended remedy for the Linux kernel vulnerability in Ubuntu 14.04 with package linux-image-generic-lts-xenial is to install version 4.4.0.248.215.

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