LSN-0098-1: Kernel Live Patch Security Notice
10 October 2023
Several security issues were fixed in the kernel.
Releases
Software Description
- aws - Linux kernel for Amazon Web Services (AWS) systems - (>= 4.15.0-1054, >= 4.15.0-1119, >= 5.4.0-1009, >= 5.4.0-1061, >= 5.15.0-1000, >= 4.4.0-1098, >= 4.4.0-1129)
- aws-5.15 - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.15.0-1000)
- aws-6.2 - Linux kernel for Amazon Web Services (AWS) systems - (>= 6.2.0-1007)
- 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-4.15 - Linux kernel for Microsoft Azure Cloud systems - (>= 4.15.0-1115)
- azure-6.2 - Linux kernel for Microsoft Azure cloud systems - (>= 6.2.0-1000)
- 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-6.2 - Linux kernel for Google Cloud Platform (GCP) systems - (>= 6.2.0-1000)
- generic-4.15 - Linux kernel - (>= 4.15.0-69, >= 4.15.0-214)
- 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)
- 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)
- gkeop - Linux kernel for Google Container Engine (GKE) systems - (>= 5.4.0-1009)
- hwe-6.2 - Linux hardware enablement (HWE) kernel - (>= 6.2.0-20)
- ibm - Linux kernel for IBM cloud systems - (>= 5.4.0-1009, >= 5.15.0-1000)
- linux - Linux kernel - (>= 5.15.0-71, >= 5.15.0-24)
- lowlatency-4.15 - Linux kernel - (>= 4.15.0-69, >= 4.15.0-214)
- 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)
Details
It was discovered that the IP-VLAN network driver for the Linux kernel did
not properly initialize memory in some situations, leading to 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-2023-3090)
It was discovered that the virtual terminal driver in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly expose sensitive
information (kernel memory).(CVE-2023-3567)
It was discovered that the universal 32bit network packet classifier
implementation in the Linux kernel did not properly perform reference
counting in some situations, 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-2023-3609)
It was discovered that the network packet classifier with
netfilter/firewall marks implementation in the Linux kernel did not
properly handle reference counting, 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-2023-3776)
Kevin Rich discovered that the netfilter subsystem in the Linux kernel did
not properly handle table rules flush in certain circumstances. A local
attacker could possibly use this to cause a denial of service (system
crash) or execute arbitrary code.(CVE-2023-3777)
Kevin Rich discovered that the netfilter subsystem in the Linux kernel did
not properly handle rule additions to bound chains in certain
circumstances. A local attacker could possibly use this to cause a denial
of service (system crash) or execute arbitrary code.(CVE-2023-3995)
It was discovered that the netfilter subsystem in the Linux kernel did not
properly handle PIPAPO element removal, leading to a use-after-free
vulnerability. A local attacker could possibly use this to cause a denial
of service (system crash) or execute arbitrary code.(CVE-2023-4004)
It was discovered that some network classifier implementations in the Linux
kernel contained use-after-free vulnerabilities. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code.(CVE-2023-4128)
Ye Zhang and Nicolas Wu discovered that the io_uring subsystem in the Linux
kernel did not properly handle locking for rings with IOPOLL, leading to a
double-free vulnerability. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.(CVE-2023-21400)
It was discovered that the bluetooth subsystem in the Linux kernel did not
properly handle L2CAP socket release, 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-2023-40283)
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 | 98.1 | 98.1 | 98.1 | 98.1 | — |
| aws-5.15 | — | 98.1 | — | — | — |
| aws-6.2 | 98.2 | — | — | — | — |
| azure | 98.1 | 98.1 | — | 98.1 | — |
| azure-4.15 | — | — | 98.1 | — | — |
| azure-6.2 | 98.2 | — | — | — | — |
| gcp | 98.1 | 98.1 | — | 98.1 | — |
| gcp-4.15 | — | — | 98.1 | — | — |
| gcp-5.15 | — | 98.1 | — | — | — |
| gcp-6.2 | 98.3 | — | — | — | — |
| generic-4.15 | — | — | 98.2 | — | — |
| generic-4.4 | — | — | — | 98.1 | 98.1 |
| generic-5.15 | — | 98.1 | — | — | — |
| generic-5.4 | — | 98.1 | — | — | — |
| gke | 98.1 | 98.1 | — | — | — |
| gke-5.15 | — | 98.1 | — | — | — |
| gkeop | — | 98.1 | — | — | — |
| hwe-6.2 | 98.2 | — | — | — | — |
| ibm | 98.1 | 98.1 | — | — | — |
| linux | 98.1 | — | — | — | — |
| lowlatency-4.15 | — | — | 98.2 | — | — |
| lowlatency-4.4 | — | — | — | 98.1 | 98.1 |
| lowlatency-5.15 | — | 98.1 | — | — | — |
| lowlatency-5.4 | — | 98.1 | — | — | — |
To check your kernel type and Livepatch version, enter this command:
canonical-livepatch status