来源：Ubuntu官网
发布日期：2020-07-03
阅读次数：2081
评论：0
更新标题
USN-4414-1: Linux kernel vulnerabilities
更新详情
linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 18.04 LTS
Ubuntu 16.04 LTS
Summary
Several security issues were fixed in the Linux kernel.
Software Description
linux - Linux kernel
linux-aws - Linux kernel for Amazon Web Services (AWS) systems
linux-gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems
linux-gke-4.15 - Linux kernel for Google Container Engine (GKE) systems
linux-kvm - Linux kernel for cloud environments
linux-oem - Linux kernel for OEM systems
linux-oracle - Linux kernel for Oracle Cloud systems
linux-raspi2 - Linux kernel for Raspberry Pi (V7) systems
linux-snapdragon - Linux kernel for Qualcomm Snapdragon processors
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
Details
It was discovered that the network block device (nbd) implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux kernel did not properly validate file system metadata in some situations. An attacker could use this to construct a malicious btrfs image that, when mounted, could cause a denial of service (system crash). (CVE-2019-19036, CVE-2019-19318, CVE-2019-19813, CVE-2019-19816)
It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service (system crash). (CVE-2019-19377)
It was discovered that the kernel->user space relay implementation in the Linux kernel did not properly check return values in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-19462)
Matthew Sheets discovered that the SELinux network label handling implementation in the Linux kernel could be coerced into de-referencing a NULL pointer. A remote attacker could use this to cause a denial of service (system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did not properly handle certain error conditions correctly. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2020-12770)
It was discovered that the USB Gadget device driver in the Linux kernel did not validate arguments passed from configfs in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-13143)
It was discovered that the efi subsystem in the Linux kernel did not handle memory allocation failures during early boot in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-12380)
It was discovered that the btrfs file system in the Linux kernel in some error conditions could report register information to the dmesg buffer. A local attacker could possibly use this to expose sensitive information. (CVE-2019-19039)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04 LTS
linux-image-4.15.0-1048-oracle - 4.15.0-1048.52
linux-image-4.15.0-1064-gke - 4.15.0-1064.67
linux-image-4.15.0-1065-raspi2 - 4.15.0-1065.69
linux-image-4.15.0-1069-kvm - 4.15.0-1069.70
linux-image-4.15.0-1077-aws - 4.15.0-1077.81
linux-image-4.15.0-1078-gcp - 4.15.0-1078.88
linux-image-4.15.0-1081-snapdragon - 4.15.0-1081.88
linux-image-4.15.0-109-generic - 4.15.0-109.110
linux-image-4.15.0-109-generic-lpae - 4.15.0-109.110
linux-image-4.15.0-109-lowlatency - 4.15.0-109.110
linux-image-4.15.0-1091-oem - 4.15.0-1091.101
linux-image-aws-lts-18.04 - 4.15.0.1077.79
linux-image-gcp-lts-18.04 - 4.15.0.1078.94
linux-image-generic - 4.15.0.109.97
linux-image-generic-lpae - 4.15.0.109.97
linux-image-gke - 4.15.0.1064.66
linux-image-gke-4.15 - 4.15.0.1064.66
linux-image-kvm - 4.15.0.1069.65
linux-image-lowlatency - 4.15.0.109.97
linux-image-oem - 4.15.0.1091.94
linux-image-oracle-lts-18.04 - 4.15.0.1048.57
linux-image-powerpc-e500mc - 4.15.0.109.97
linux-image-powerpc-smp - 4.15.0.109.97
linux-image-powerpc64-emb - 4.15.0.109.97
linux-image-powerpc64-smp - 4.15.0.109.97
linux-image-raspi2 - 4.15.0.1065.63
linux-image-snapdragon - 4.15.0.1081.84
linux-image-virtual - 4.15.0.109.97
Ubuntu 16.04 LTS
linux-image-4.15.0-1046-oracle - 4.15.0-1046.50~16.04.1
linux-image-4.15.0-107-generic - 4.15.0-107.108~16.04.1
linux-image-4.15.0-107-generic-lpae - 4.15.0-107.108~16.04.1
linux-image-4.15.0-107-lowlatency - 4.15.0-107.108~16.04.1
linux-image-4.15.0-1074-aws - 4.15.0-1074.78~16.04.1
linux-image-4.15.0-1078-gcp - 4.15.0-1078.88~16.04.1
linux-image-aws-hwe - 4.15.0.1074.74
linux-image-gcp - 4.15.0.1078.80
linux-image-generic-hwe-16.04 - 4.15.0.107.112
linux-image-generic-lpae-hwe-16.04 - 4.15.0.107.112
linux-image-gke - 4.15.0.1078.80
linux-image-lowlatency-hwe-16.04 - 4.15.0.107.112
linux-image-oem - 4.15.0.107.112
linux-image-oracle - 4.15.0.1046.39
linux-image-virtual-hwe-16.04 - 4.15.0.107.112
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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
CVE-2019-12380
CVE-2019-16089
CVE-2019-19036
CVE-2019-19039
CVE-2019-19318
CVE-2019-19377
CVE-2019-19462
CVE-2019-19813
CVE-2019-19816
CVE-2020-10711
CVE-2020-12770
CVE-2020-13143
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软件描述
Ubuntu是一个以桌面应用为主的Linux操作系统
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