USN-5046-1

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Source

https://ubuntu.com/security/notices/USN-5046-1

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5046-1.json

JSON Data

https://api.osv.dev/v1/vulns/USN-5046-1

Related

Published

2021-08-18T17:29:24.382312Z

Modified

2021-08-18T17:29:24.382312Z

Summary

linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.11, linux-kvm, linux-oracle, linux-raspi vulnerabilities

Details

It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access control. An authenticated attacker could possibly use this to expose sensitive information. (CVE-2020-26558, CVE-2021-0129)

Michael Brown discovered that the Xen netback driver in the Linux kernel did not properly handle malformed packets from a network PV frontend, leading to a use-after-free vulnerability. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-28691)

It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle HCI device initialization failure, leading to a double-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-3564)

It was discovered that the bluetooth subsystem in the Linux kernel did not properly handle HCI device detach events, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-3573)

It was discovered that the NFC implementation in the Linux kernel did not properly handle failed connect events leading to a NULL pointer dereference. A local attacker could use this to cause a denial of service. (CVE-2021-3587)

References

Affected packages

Ubuntu:20.04:LTS / linux-hwe-5.11

Package

Name: linux-hwe-5.11
Purl: pkg:deb/ubuntu/linux-hwe-5.11?arch=src?distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.11.0-27.29~20.04.1

Affected versions

5.*

5.11.0-22.23~20.04.1

5.11.0-25.27~20.04.1

Ecosystem specific

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