LSN-0096-1: Kernel Live Patch Security Notice
25 July 2023
Several security issues were fixed in the kernel.
Releases
Software Description
- aws - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.4.0-1009, >= 5.4.0-1061, >= 4.4.0-1098, >= 4.4.0-1129)
- aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems - (>= 4.15.0-1126)
- azure - Linux kernel for Microsoft Azure Cloud systems - (>= 5.4.0-1010, >= 5.15.0-1000, >= 4.15.0-1063, >= 4.15.0-1078, >= 4.15.0-1114)
- azure-5.4 - Linux kernel for Microsoft Azure cloud systems - (>= 5.4.0-1069)
- gcp - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1009, >= 5.15.0-1000, >= 4.15.0-1118)
- gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 4.15.0-1121)
- gcp-5.15 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.15.0-1000)
- gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 5.4.0-1069)
- generic-4.15 - Linux hardware enablement (HWE) kernel - (>= 4.15.0-69, >= 4.15.0-143, >= 4.15.0-143, >= 4.15.0-69)
- generic-4.4 - Linux kernel - (>= 4.4.0-168, >= 4.4.0-211, >= 4.4.0-168)
- generic-5.15 - Linux hardware enablement (HWE) kernel - (>= 5.15.0-0)
- generic-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26)
- gke - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1033, >= 5.15.0-1000)
- gke-5.15 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.15.0-1000)
- gke-5.4 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009)
- gkeop - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009)
- gkeop-5.4 - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1007)
- ibm - Linux kernel for IBM cloud systems - (>= 5.4.0-1009, >= 5.15.0-1000)
- ibm-5.4 - Linux kernel for IBM cloud systems - (>= 5.4.0-1009)
- linux - Linux kernel - (>= 5.15.0-71, >= 5.15.0-24)
- lowlatency-4.15 - Linux hardware enablement (HWE) kernel - (>= 4.15.0-69, >= 4.15.0-143, >= 4.15.0-143, >= 4.15.0-69)
- lowlatency-4.4 - Linux kernel - (>= 4.4.0-168, >= 4.4.0-211, >= 4.4.0-168)
- lowlatency-5.15 - Linux hardware enablement (HWE) kernel - (>= 5.15.0-0)
- lowlatency-5.4 - Linux kernel - (>= 5.4.0-26, >= 5.4.0-26)
Details
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)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in certain situations. An attacker in a guest VM could use this to cause a
denial of service (guest crash).(CVE-2023-30456)
Mingi Cho discovered that the netfilter subsystem in the Linux kernel did
not properly validate the status of a nft chain while performing a lookup
by id, leading to a use-after-free vulnerability. An attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code.(CVE-2023-31248)
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)
Tanguy Dubroca discovered that the netfilter subsystem in the Linux kernel
did not properly handle certain pointer data type, leading to an out-of-
bounds write vulnerability. A privileged attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.(CVE-2023-35001)
Checking update status
The problem can be corrected in these Livepatch versions:
| Kernel type | 22.04 | 20.04 | 18.04 | 16.04 | 14.04 |
|---|---|---|---|---|---|
| aws | — | 96.2 | — | 96.2 | — |
| aws-hwe | — | — | — | 96.2 | — |
| azure | 96.3 | 96.2 | — | 96.2 | — |
| azure-5.4 | — | — | 96.2 | — | — |
| gcp | 96.3 | 96.2 | — | 96.2 | — |
| gcp-4.15 | — | — | 96.2 | — | — |
| gcp-5.15 | — | 96.3 | — | — | — |
| gcp-5.4 | — | — | 96.2 | — | — |
| generic-4.15 | — | — | 96.2 | 96.2 | — |
| generic-4.4 | — | — | — | 96.2 | 96.2 |
| generic-5.15 | — | 96.3 | — | — | — |
| generic-5.4 | — | 96.2 | 96.2 | — | — |
| gke | 96.3 | 96.2 | — | — | — |
| gke-5.15 | — | 96.3 | — | — | — |
| gke-5.4 | — | — | 96.2 | — | — |
| gkeop | — | 96.2 | — | — | — |
| gkeop-5.4 | — | — | 96.2 | — | — |
| ibm | 96.3 | 96.2 | — | — | — |
| ibm-5.4 | — | — | 96.2 | — | — |
| linux | 96.3 | — | — | — | — |
| lowlatency-4.15 | — | — | 96.2 | 96.2 | — |
| lowlatency-4.4 | — | — | — | 96.2 | 96.2 |
| lowlatency-5.15 | — | 96.3 | — | — | — |
| lowlatency-5.4 | — | 96.2 | 96.2 | — | — |
To check your kernel type and Livepatch version, enter this command:
canonical-livepatch status