USN-4984-1

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Source

https://ubuntu.com/security/notices/USN-4984-1

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4984-1.json

JSON Data

https://api.osv.dev/v1/vulns/USN-4984-1

Related

Published

2021-06-08T02:05:13.407560Z

Modified

2021-06-08T02:05:13.407560Z

Summary

linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities

Details

Jan Beulich discovered that the Xen netback backend in the Linux kernel did not properly handle certain error conditions under paravirtualization. An attacker in a guest VM could possibly use this to cause a denial of service (host domain crash). (CVE-2021-28038)

It was discovered that the Realtek RTL8188EU Wireless device driver in the Linux kernel did not properly validate ssid lengths in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2021-28660)

It was discovered that the Xen paravirtualization backend in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-28688)

It was discovered that the fuse user space file system implementation in the Linux kernel did not properly handle bad inodes in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2021-28950)

John Stultz discovered that the audio driver for Qualcomm SDM845 systems in the Linux kernel did not properly validate port ID numbers. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-28952)

Zygo Blaxell discovered that the btrfs file system implementation in the Linux kernel contained a race condition during certain cloning operations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-28964)

Vince Weaver discovered that the perf subsystem in the Linux kernel did not properly handle certain PEBS records properly for some Intel Haswell processors. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-28971)

It was discovered that the RPA PCI Hotplug driver implementation in the Linux kernel did not properly handle device name writes via sysfs, leading to a buffer overflow. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-28972)

It was discovered that the Qualcomm IPC router implementation in the Linux kernel did not properly initialize memory passed to user space. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-29647)

Arnd Bergmann discovered that the video4linux subsystem in the Linux kernel did not properly deallocate memory in some situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-30002)

Dan Carpenter discovered that the block device manager (dm) implementation in the Linux kernel contained a buffer overflow in the ioctl for listing devices. A privileged local attacker could use this to cause a denial of service (system crash). (CVE-2021-31916)

It was discovered that the CIPSO implementation in the Linux kernel did not properly perform reference counting in some situations, leading to use- after-free vulnerabilities. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33033)

马哲宇 discovered that the IEEE 1394 (Firewire) nosy packet sniffer driver 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-2021-3483)

References

Affected packages

Ubuntu:20.04:LTS / linux-hwe-5.8

Package

Name: linux-hwe-5.8
Purl: pkg:deb/ubuntu/linux-hwe-5.8?arch=src?distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.8.0-55.62~20.04.1

Affected versions

5.*

5.8.0-23.24~20.04.1

5.8.0-25.26~20.04.1

5.8.0-28.30~20.04.1

5.8.0-29.31~20.04.1

5.8.0-31.33~20.04.1

5.8.0-33.36~20.04.1

5.8.0-34.37~20.04.2

5.8.0-36.40~20.04.1

5.8.0-38.43~20.04.1

5.8.0-40.45~20.04.1

5.8.0-41.46~20.04.1

5.8.0-43.49~20.04.1

5.8.0-44.50~20.04.1

5.8.0-45.51~20.04.1

5.8.0-48.54~20.04.1

5.8.0-49.55~20.04.1

5.8.0-50.56~20.04.1

5.8.0-53.60~20.04.1

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