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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------K6WxccEc9F0qdOYBUyHHjxo8 Content-Type: multipart/mixed; boundary="------------veZRF90zy9RbCUKw30bvygUi"; protected-headers="v1" From: Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com> Reply-To: Ubuntu Security Team <security@ubuntu.com> To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <ed599718-7bc6-776c-546f-6c5c7f8821f4@canonical.com> Subject: [USN-5757-2] Linux kernel vulnerabilities
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========================================================================== Ubuntu Security Notice USN-5757-2 December 01, 2022
linux-aws-hwe, linux-gcp, linux-hwe, linux-oracle vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
Summary:
Several security issues were fixed in the Linux kernel.
Software Description: - linux-aws-hwe: Linux kernel for Amazon Web Services (AWS-HWE) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-hwe: Linux hardware enablement (HWE) kernel - linux-oracle: Linux kernel for Oracle Cloud systems
Details:
Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42703)
It was discovered that the video4linux driver for Empia based TV cards 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-2022-3239)
It was discovered that a memory leak existed in the IPv6 implementation of the Linux kernel. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2022-3524)
It was discovered that a race condition existed in the Bluetooth 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-2022-3564)
It was discovered that the ISDN implementation of the Linux kernel contained a use-after-free vulnerability. A privileged user could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3565)
It was discovered that the TCP implementation in the Linux kernel contained a data race condition. An attacker could possibly use this to cause undesired behaviors. (CVE-2022-3566)
It was discovered that the IPv6 implementation in the Linux kernel contained a data race condition. An attacker could possibly use this to cause undesired behaviors. (CVE-2022-3567)
It was discovered that the Realtek RTL8152 USB Ethernet adapter driver in the Linux kernel did not properly handle certain error conditions. A local attacker with physical access could plug in a specially crafted USB device to cause a denial of service (memory exhaustion). (CVE-2022-3594)
It was discovered that a null pointer dereference existed in the NILFS2 file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3621)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 ESM: linux-image-4.15.0-1111-oracle 4.15.0-1111.122~16.04.2 linux-image-4.15.0-1141-gcp 4.15.0-1141.157~16.04.2 linux-image-4.15.0-1146-aws-hwe 4.15.0-1146.158~16.04.2 linux-image-4.15.0-200-generic 4.15.0-200.211~16.04.2 linux-image-4.15.0-200-lowlatency 4.15.0-200.211~16.04.2 linux-image-aws-hwe 4.15.0.1146.131 linux-image-gcp 4.15.0.1141.133 linux-image-generic-hwe-16.04 4.15.0.200.185 linux-image-gke 4.15.0.1141.133 linux-image-lowlatency-hwe-16.04 4.15.0.200.185 linux-image-oem 4.15.0.200.185 linux-image-oracle 4.15.0.1111.93 linux-image-virtual-hwe-16.04 4.15.0.200.185
After a standard system update you need to reboot your computer to make all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.
References: https://ubuntu.com/security/notices/USN-5757-2 https://ubuntu.com/security/notices/USN-5757-1 CVE-2022-3239, CVE-2022-3524, CVE-2022-3564, CVE-2022-3565, CVE-2022-3566, CVE-2022-3567, CVE-2022-3594, CVE-2022-3621, CVE-2022-42703 --------------veZRF90zy9RbCUKw30bvygUi--
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