LSN-0097-1: Kernel Live Patch Security Notice
5 September 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, >= 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-5.4 - Linux kernel for Amazon Web Services (AWS) systems - (>= 5.4.0-1069)
- aws-6.2 - Linux kernel for Amazon Web Services (AWS) systems - (>= 6.2.0-1000)
- 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)
- 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)
- 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 - (>= 4.15.0-143, >= 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 - (>= 4.15.0-143, >= 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 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)
Querijn Voet 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-2023-3389)
It was discovered that the netfilter subsystem in the Linux kernel did not
properly handle some error conditions, 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-2023-3390)
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)
Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in
the Ubuntu Linux kernel did not properly perform permission checks in
certain situations. A local attacker could possibly use this to gain
elevated privileges.(CVE-2023-32629)
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)
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)
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 | 97.1 | 97.1 | — | 97.2 | — |
| aws-5.15 | — | 97.1 | — | — | — |
| aws-5.4 | — | — | 97.1 | — | — |
| aws-6.2 | 97.2 | — | — | — | — |
| aws-hwe | — | — | — | 97.2 | — |
| azure | 97.1 | 97.1 | — | — | — |
| azure-5.4 | — | — | 97.1 | — | — |
| gcp | 97.1 | 97.1 | — | — | — |
| gcp-5.15 | — | 97.1 | — | — | — |
| gcp-5.4 | — | — | 97.1 | — | — |
| generic-4.15 | — | — | — | 97.2 | — |
| generic-4.4 | — | — | — | 97.2 | 97.2 |
| generic-5.15 | — | 97.1 | — | — | — |
| generic-5.4 | — | 97.1 | 97.1 | — | — |
| gke | 97.1 | 97.1 | — | — | — |
| gke-5.15 | — | 97.1 | — | — | — |
| gke-5.4 | — | — | 97.1 | — | — |
| gkeop | — | 97.1 | — | — | — |
| gkeop-5.4 | — | — | 97.1 | — | — |
| ibm | 97.1 | 97.1 | — | — | — |
| ibm-5.4 | — | — | 97.1 | — | — |
| linux | 97.1 | — | — | — | — |
| lowlatency-4.15 | — | — | — | 97.2 | — |
| lowlatency-4.4 | — | — | — | 97.2 | 97.2 |
| lowlatency-5.15 | — | 97.1 | — | — | — |
| lowlatency-5.4 | — | 97.1 | 97.1 | — | — |
To check your kernel type and Livepatch version, enter this command:
canonical-livepatch status