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Ubuntu Security Notice USN-6604-1

Ubuntu Security Notice 6604-1 - It was discovered that the ASUS HID driver in the Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service. Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii Oleksenko discovered that some AMD processors could leak stale data from division operations in certain situations. A local attacker could possibly use this to expose sensitive information.

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#vulnerability#web#google#amazon#ubuntu#linux#dos#oracle#perl#aws#amd#asus
==========================================================================Ubuntu Security Notice USN-6604-1January 25, 2024linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-hwe,linux-kvm, linux-oracle vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 18.04 LTS (Available with Ubuntu Pro)- Ubuntu 16.04 LTS (Available with Ubuntu Pro)Summary:Several security issues were fixed in the Linux kernel.Software Description:- linux: Linux kernel- linux-aws: Linux kernel for Amazon Web Services (AWS) systems- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems- linux-kvm: Linux kernel for cloud environments- linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems- linux-hwe: Linux hardware enablement (HWE) kernel- linux-oracle: Linux kernel for Oracle Cloud systemsDetails:It was discovered that the ASUS HID driver in the Linux kernel did notproperly handle device removal, leading to a use-after-free vulnerability.A local attacker with physical access could plug in a specially crafted USBdevice to cause a denial of service (system crash). (CVE-2023-1079)Jana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and OleksiiOleksenko discovered that some AMD processors could leak stale data fromdivision operations in certain situations. A local attacker could possiblyuse this to expose sensitive information. (CVE-2023-20588)It was discovered that a race condition existed in the Linux kernel whenperforming operations with kernel objects, leading to an out-of-boundswrite. A local attacker could use this to cause a denial of service (systemcrash) or execute arbitrary code. (CVE-2023-45863)It was discovered that the CIFS network file system implementation in theLinux kernel did not properly validate the server frame size in certainsituation, leading to an out-of-bounds read vulnerability. An attackercould use this to construct a malicious CIFS image that, when operated on,could cause a denial of service (system crash) or possibly expose sensitiveinformation. (CVE-2023-6606)Budimir Markovic, Lucas De Marchi, and Pengfei Xu discovered that the perfsubsystem in the Linux kernel did not properly validate all event sizeswhen attaching new events, 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-2023-6931)It was discovered that the IGMP protocol implementation in the Linux kernelcontained a race condition, leading to a use-after-free vulnerability. Alocal attacker could use this to cause a denial of service (system crash)or possibly execute arbitrary code. (CVE-2023-6932)Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 18.04 LTS (Available with Ubuntu Pro):   linux-image-4.15.0-1148-kvm     4.15.0-1148.153   linux-image-4.15.0-1158-gcp     4.15.0-1158.175   linux-image-4.15.0-1164-aws     4.15.0-1164.177   linux-image-4.15.0-221-generic  4.15.0-221.232   linux-image-4.15.0-221-lowlatency  4.15.0-221.232   linux-image-aws-lts-18.04       4.15.0.1164.162   linux-image-gcp-lts-18.04       4.15.0.1158.172   linux-image-generic             4.15.0.221.205   linux-image-kvm                 4.15.0.1148.139   linux-image-lowlatency          4.15.0.221.205   linux-image-virtual             4.15.0.221.205Ubuntu 16.04 LTS (Available with Ubuntu Pro):   linux-image-4.15.0-1127-oracle  4.15.0-1127.138~16.04.1   linux-image-4.15.0-1158-gcp     4.15.0-1158.175~16.04.1   linux-image-4.15.0-1164-aws     4.15.0-1164.177~16.04.1   linux-image-4.15.0-221-generic  4.15.0-221.232~16.04.1   linux-image-4.15.0-221-lowlatency  4.15.0-221.232~16.04.1   linux-image-aws-hwe             4.15.0.1164.147   linux-image-gcp                 4.15.0.1158.148   linux-image-generic-hwe-16.04   4.15.0.221.5   linux-image-gke                 4.15.0.1158.148   linux-image-lowlatency-hwe-16.04  4.15.0.221.5   linux-image-oem                 4.15.0.221.5   linux-image-oracle              4.15.0.1127.108   linux-image-virtual-hwe-16.04   4.15.0.221.5After a standard system update you need to reboot your computer to makeall the necessary changes.ATTENTION: Due to an unavoidable ABI change the kernel updates havebeen given a new version number, which requires you to recompile andreinstall 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 performthis as well.References:   https://ubuntu.com/security/notices/USN-6604-1   CVE-2023-1079, CVE-2023-20588, CVE-2023-45863, CVE-2023-6606,   CVE-2023-6931, CVE-2023-6932

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Ubuntu Security Notice 6185-1 - It was discovered that the TUN/TAP driver in the Linux kernel did not properly initialize socket data. A local attacker could use this to cause a denial of service. It was discovered that the Real-Time Scheduling Class implementation in the Linux kernel contained a type confusion vulnerability in some situations. A local attacker could use this to cause a denial of service.

Ubuntu Security Notice USN-6033-1

Ubuntu Security Notice 6033-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for thisCVE, kernel support for the TCINDEX classifier has been removed. William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service.

CVE-2023-1079

A flaw was found in the Linux kernel. A use-after-free may be triggered in asus_kbd_backlight_set when plugging/disconnecting in a malicious USB device, which advertises itself as an Asus device. Similarly to the previous known CVE-2023-25012, but in asus devices, the work_struct may be scheduled by the LED controller while the device is disconnecting, triggering a use-after-free on the struct asus_kbd_leds *led structure. A malicious USB device may exploit the issue to cause memory corruption with controlled data.

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