USN-4660-2

See a problem?
Source
https://ubuntu.com/security/notices/USN-4660-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/USN-4660-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4660-2
Published
2020-12-13T23:27:41.218527Z
Modified
2020-12-13T23:27:41.218527Z
Summary
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oracle, linux-snapdragon regression
Details

USN-4660-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression in the software raid10 driver when used with fstrim that could lead to data corruption. This update fixes the problem.

Original advisory details:

It was discovered that a race condition existed in the perf subsystem of the Linux kernel, leading to a use-after-free vulnerability. An attacker with access to the perf subsystem could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14351)

It was discovered that the frame buffer implementation in the Linux kernel did not properly handle some edge cases in software scrollback. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-14390)

It was discovered that the netfilter connection tracker for netlink in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-25211)

It was discovered that the Rados block device (rbd) driver in the Linux kernel did not properly perform privilege checks for access to rbd devices in some situations. A local attacker could use this to map or unmap rbd block devices. (CVE-2020-25284)

It was discovered that a race condition existed in the hugetlb sysctl implementation in the Linux kernel. A privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-25285)

It was discovered that the block layer subsystem in the Linux kernel did not properly handle zero-length requests. A local attacker could use this to cause a denial of service. (CVE-2020-25641)

It was discovered that the HDLC PPP implementation in the Linux kernel did not properly validate input in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25643)

It was discovered that the GENEVE tunnel implementation in the Linux kernel when combined with IPSec did not properly select IP routes in some situations. An attacker could use this to expose sensitive information (unencrypted network traffic). (CVE-2020-25645)

It was discovered that the framebuffer implementation in the Linux kernel did not properly perform range checks in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-28915)

It was discovered that Power 9 processors could be coerced to expose information from the L1 cache in certain situations. A local attacker could use this to expose sensitive information. (CVE-2020-4788)

References

Affected packages

Ubuntu:18.04:LTS / linux-gcp-4.15

Package

Name
linux-gcp-4.15

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1090.103

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-4.15.0-1090-gcp": "4.15.0-1090.103",
            "linux-image-gcp-lts-18.04": "4.15.0.1090.108"
        }
    ]
}

Ubuntu:18.04:LTS / linux-gke-4.15

Package

Name
linux-gke-4.15

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1076.81

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-gke-4.15": "4.15.0.1076.80",
            "linux-image-gke": "4.15.0.1076.80",
            "linux-image-4.15.0-1076-gke": "4.15.0-1076.81"
        }
    ]
}

Ubuntu:18.04:LTS / linux-kvm

Package

Name
linux-kvm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1081.83

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-4.15.0-1081-kvm": "4.15.0-1081.83",
            "linux-image-kvm": "4.15.0.1081.77"
        }
    ]
}

Ubuntu:18.04:LTS / linux-snapdragon

Package

Name
linux-snapdragon

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1093.102

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-snapdragon": "4.15.0.1093.96",
            "linux-image-4.15.0-1093-snapdragon": "4.15.0-1093.102"
        }
    ]
}

Ubuntu:18.04:LTS / linux-aws

Package

Name
linux-aws

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1090.95

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-4.15.0-1090-aws": "4.15.0-1090.95",
            "linux-image-aws-lts-18.04": "4.15.0.1090.92"
        }
    ]
}

Ubuntu:18.04:LTS / linux-oracle

Package

Name
linux-oracle

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1061.67

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-oracle-lts-18.04": "4.15.0.1061.71",
            "linux-image-4.15.0-1061-oracle": "4.15.0-1061.67"
        }
    ]
}

Ubuntu:18.04:LTS / linux

Package

Name
linux

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-128.131

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-4.15.0-128-generic": "4.15.0-128.131",
            "linux-image-lowlatency-hwe-16.04": "4.15.0.128.115",
            "linux-image-4.15.0-128-lowlatency": "4.15.0-128.131",
            "linux-image-virtual-hwe-16.04-edge": "4.15.0.128.115",
            "linux-image-generic-hwe-16.04": "4.15.0.128.115",
            "linux-image-generic-lpae-hwe-16.04": "4.15.0.128.115",
            "linux-image-4.15.0-128-generic-lpae": "4.15.0-128.131",
            "linux-image-lowlatency": "4.15.0.128.115",
            "linux-image-generic": "4.15.0.128.115",
            "linux-image-lowlatency-hwe-16.04-edge": "4.15.0.128.115",
            "linux-image-generic-lpae-hwe-16.04-edge": "4.15.0.128.115",
            "linux-image-virtual": "4.15.0.128.115",
            "linux-image-generic-hwe-16.04-edge": "4.15.0.128.115",
            "linux-image-generic-lpae": "4.15.0.128.115",
            "linux-image-virtual-hwe-16.04": "4.15.0.128.115"
        }
    ]
}

Ubuntu:18.04:LTS / linux-azure-4.15

Package

Name
linux-azure-4.15

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1102.113

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-4.15.0-1102-azure": "4.15.0-1102.113",
            "linux-image-azure-lts-18.04": "4.15.0.1102.75"
        }
    ]
}

Ubuntu:16.04:LTS / linux-aws-hwe

Package

Name
linux-aws-hwe

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1090.95~16.04.1

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-aws-hwe": "4.15.0.1090.84",
            "linux-image-4.15.0-1090-aws": "4.15.0-1090.95~16.04.1"
        }
    ]
}

Ubuntu:16.04:LTS / linux-hwe

Package

Name
linux-hwe

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-128.131~16.04.1

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-oem": "4.15.0.128.127",
            "linux-image-lowlatency-hwe-16.04": "4.15.0.128.127",
            "linux-image-virtual-hwe-16.04-edge": "4.15.0.128.127",
            "linux-image-generic-hwe-16.04": "4.15.0.128.127",
            "linux-image-generic-lpae-hwe-16.04-edge": "4.15.0.128.127",
            "linux-image-4.15.0-128-generic-lpae": "4.15.0-128.131~16.04.1",
            "linux-image-4.15.0-128-lowlatency": "4.15.0-128.131~16.04.1",
            "linux-image-generic-lpae-hwe-16.04": "4.15.0.128.127",
            "linux-image-lowlatency-hwe-16.04-edge": "4.15.0.128.127",
            "linux-image-4.15.0-128-generic": "4.15.0-128.131~16.04.1",
            "linux-image-generic-hwe-16.04-edge": "4.15.0.128.127",
            "linux-image-virtual-hwe-16.04": "4.15.0.128.127"
        }
    ]
}

Ubuntu:16.04:LTS / linux-gcp

Package

Name
linux-gcp

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1090.103~16.04.1

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-gke": "4.15.0.1090.91",
            "linux-image-4.15.0-1090-gcp": "4.15.0-1090.103~16.04.1",
            "linux-image-gcp": "4.15.0.1090.91"
        }
    ]
}

Ubuntu:16.04:LTS / linux-oracle

Package

Name
linux-oracle

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1061.67~16.04.1

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-oracle": "4.15.0.1061.50",
            "linux-image-4.15.0-1061-oracle": "4.15.0-1061.67~16.04.1"
        }
    ]
}

Ubuntu:16.04:LTS / linux-azure

Package

Name
linux-azure

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.15.0-1102.113~16.04.1

Ecosystem specific

{
    "availability": "No subscription needed",
    "binaries": [
        {
            "linux-image-azure": "4.15.0.1102.95",
            "linux-image-azure-edge": "4.15.0.1102.95",
            "linux-image-4.15.0-1102-azure": "4.15.0-1102.113~16.04.1"
        }
    ]
}