USN-4689-2

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USN-4689-2

Summary: linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-4.15, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-hwe-5.8, linux-oem-5.6, linux-oracle, linux-oracle-5.4 vulnerabilities

Details: USN-4689-1 fixed vulnerabilities in the NVIDIA graphics drivers. This update provides the corresponding updates for the NVIDIA Linux DKMS kernel modules. Original advisory details: It was discovered that the NVIDIA GPU display driver for the Linux kernel contained a vulnerability that allowed user-mode clients to access legacy privileged APIs. A local attacker could use this to cause a denial of service or escalate privileges. (CVE-2021-1052) It was discovered that the NVIDIA GPU display driver for the Linux kernel did not properly validate a pointer received from userspace in some situations. A local attacker could use this to cause a denial of service. (CVE-2021-1053) Xinyuan Lyu discovered that the NVIDIA GPU display driver for the Linux kernel did not properly restrict device-level GPU isolation. A local attacker could use this to cause a denial of service or possibly expose sensitive information. (CVE-2021-1056)

References: https://ubuntu.com/security/notices/USN-4689-2, https://ubuntu.com/security/CVE-2021-1052, https://ubuntu.com/security/CVE-2021-1053, https://ubuntu.com/security/CVE-2021-1056