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ubuntuUbuntuUSN-6193-1
HistoryJun 29, 2023 - 12:00 a.m.

Linux kernel vulnerabilities

2023-06-2900:00:00
ubuntu.com
35
ubuntu
ubuntu 23.04
ubuntu 22.04 lts
ubuntu 20.04 lts
ubuntu 18.04 esm
linux kernel
linux-aws
linux-azure
linux-bluefield
linux-gcp
linux-gke
linux-hwe
linux-ibm
linux-kvm
linux-lowlatency
linux-nvidia
linux-oracle
linux-raspi
flower classifier
invlpg instruction
vulnerability
cve-2023-35788
lp: #2023577
lp: #2023220

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.3 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

19.1%

Releases

  • Ubuntu 23.04
  • Ubuntu 22.04 LTS
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-5.15 - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems
  • linux-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-5.15 - Linux kernel for Microsoft Azure cloud systems
  • linux-azure-5.4 - Linux kernel for Microsoft Azure cloud systems
  • linux-azure-fde-5.15 - Linux kernel for Microsoft Azure CVM cloud systems
  • linux-bluefield - Linux kernel for NVIDIA BlueField platforms
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-5.15 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gke - Linux kernel for Google Container Engine (GKE) systems
  • linux-gke-5.15 - Linux kernel for Google Container Engine (GKE) systems
  • linux-gkeop - Linux kernel for Google Container Engine (GKE) systems
  • linux-gkeop-5.15 - Linux kernel for Google Container Engine (GKE) systems
  • linux-hwe-5.15 - Linux hardware enablement (HWE) kernel
  • linux-hwe-5.4 - Linux hardware enablement (HWE) kernel
  • linux-ibm - Linux kernel for IBM cloud systems
  • linux-ibm-5.4 - Linux kernel for IBM cloud systems
  • linux-kvm - Linux kernel for cloud environments
  • linux-lowlatency - Linux low latency kernel
  • linux-lowlatency-hwe-5.15 - Linux low latency kernel
  • linux-nvidia - Linux kernel for NVIDIA systems
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-oracle-5.15 - Linux kernel for Oracle Cloud systems
  • linux-oracle-5.4 - Linux kernel for Oracle Cloud systems
  • linux-raspi - Linux kernel for Raspberry Pi systems
  • linux-raspi-5.4 - Linux kernel for Raspberry Pi systems

Details

Hangyu Hua discovered that the Flower classifier implementation in the
Linux kernel contained an out-of-bounds write vulnerability. An attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-35788, LP: #2023577)

It was discovered that for some Intel processors the INVLPG instruction
implementation did not properly flush global TLB entries when PCIDs are
enabled. An attacker could use this to expose sensitive information
(kernel memory) or possibly cause undesired behaviors. (LP: #2023220)

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.3 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

19.1%