LSN-0095-1

Description

Kernel Live Patch Security Notice It was discovered that the OverlayFS implementation in the Linux kernel did not properly handle copy up operation in some conditions. A local attacker could possibly use this to gain elevated privileges.(CVE-2023-0386) It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux kernel did not properly perform data buffer size validation in some situations. A physically proximate attacker could use this to craft a malicious USB device that when inserted, could cause a denial of service (system crash) or possibly expose sensitive information.(CVE-2023-1380) It was discovered that a race condition existed in the io_uring subsystem 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-2023-1872) Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu Linux kernel contained a race condition when handling inode locking in some situations. A local attacker could use this to cause a denial of service (kernel deadlock).(CVE-2023-2612) Gwangun Jung discovered that the Quick Fair Queueing scheduler implementation in the Linux kernel contained 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-2023-31436) Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in the netfilter subsystem of the Linux kernel when processing batch requests, 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-2023-32233)

Affected Systems

• ubuntu•linux

  < 5.4.0-150.167 | < 5.15.0-73.80 | all | < 5.15.0-71.78

• ubuntu•linux-aws

  < 5.4.0-1103.111 | < 5.15.0-1037.41 | all | < 5.15.0-1035.39

• ubuntu•linux-aws-5.15

  < 5.15.0-1037.41~20.04.1 | < 5.15.0-1035.39~20.04.1

• ubuntu•linux-aws-5.4

  < 5.4.0-1103.111~18.04.1 | all

• ubuntu•linux-azure

  < 5.4.0-1109.115 | < 5.15.0-1039.46 | all | < 5.15.0-1037.44

• ubuntu•linux-azure-5.4

  < 5.4.0-1109.115~18.04.1 | all

• ubuntu•linux-gcp

  < 5.4.0-1106.115 | < 5.15.0-1035.43 | all | < 5.15.0-1034.42

• ubuntu•linux-gcp-5.15

  < 5.15.0-1035.43~20.04.1 | < 5.15.0-1033.41~20.04.1

• ubuntu•linux-gcp-5.4

  < 5.4.0-1106.115~18.04.1 | all

• ubuntu•linux-gke

  < 5.4.0-1100.107 | < 5.15.0-1034.39 | all | < 5.15.0-1032.37

• ubuntu•linux-gke-5.15

  < 5.15.0-1034.39~20.04.1 | < 5.15.0-1032.37~20.04.1

• ubuntu•linux-gke-5.4

  all

• ubuntu•linux-gkeop

  < 5.4.0-1070.74 | all

• ubuntu•linux-gkeop-5.4

  all

• ubuntu•linux-hwe-5.4

  < 5.4.0-150.167~18.04.1 | all

• ubuntu•linux-ibm

  < 5.4.0-1050.55 | < 5.15.0-1031.34 | all | < 5.15.0-1029.32

• ubuntu•linux-ibm-5.4

  < 5.4.0-1050.55~18.04.1 | all

• ubuntu•linux-lowlatency

  < 5.15.0-73.80 | < 5.15.0-71.78

References (7)

• https://ubuntu.com/security/notices/LSN-0095-1
• https://ubuntu.com/security/CVE-2023-0386
• https://ubuntu.com/security/CVE-2023-1380
• https://ubuntu.com/security/CVE-2023-1872
• https://ubuntu.com/security/CVE-2023-2612
• https://ubuntu.com/security/CVE-2023-31436
• https://ubuntu.com/security/CVE-2023-32233