USN-4094-1: Linux kernel vulnerabilities<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
Several security issues were fixed in the Linux kernel.<\/p>\n
It was discovered that the alarmtimer implementation in the Linux kernel
\ncontained an integer overflow vulnerability. A local attacker could use
\nthis to cause a denial of service. (CVE-2018-13053)<\/p>\n
Wen Xu discovered that the XFS filesystem implementation in the Linux
\nkernel did not properly track inode validations. An attacker could use this
\nto construct a malicious XFS image that, when mounted, could cause a denial
\nof service (system crash). (CVE-2018-13093)<\/p>\n
Wen Xu discovered that the f2fs file system implementation in the
\nLinux kernel did not properly validate metadata. An attacker could
\nuse this to construct a malicious f2fs image that, when mounted,
\ncould cause a denial of service (system crash). (CVE-2018-13097,
\nCVE-2018-13099, CVE-2018-13100, CVE-2018-14614, CVE-2018-14616,
\nCVE-2018-13096, CVE-2018-13098, CVE-2018-14615)<\/p>\n
Wen Xu and Po-Ning Tseng discovered that btrfs file system
\nimplementation in the Linux kernel did not properly validate
\nmetadata. An attacker could use this to construct a malicious
\nbtrfs image that, when mounted, could cause a denial of service
\n(system crash). (CVE-2018-14610, CVE-2018-14611, CVE-2018-14612,
\nCVE-2018-14613, CVE-2018-14609)<\/p>\n
Wen Xu discovered that the HFS+ filesystem implementation in the Linux
\nkernel did not properly handle malformed catalog data in some situations.
\nAn attacker could use this to construct a malicious HFS+ image that, when
\nmounted, could cause a denial of service (system crash). (CVE-2018-14617)<\/p>\n
Vasily Averin and Pavel Tikhomirov discovered that the cleancache subsystem
\nof the Linux kernel did not properly initialize new files in some
\nsituations. A local attacker could use this to expose sensitive
\ninformation. (CVE-2018-16862)<\/p>\n
Hui Peng and Mathias Payer discovered that the USB subsystem in the Linux
\nkernel did not properly handle size checks when handling an extra USB
\ndescriptor. A physically proximate attacker could use this to cause a
\ndenial of service (system crash). (CVE-2018-20169)<\/p>\n
It was discovered that a use-after-free error existed in the block layer
\nsubsystem of the Linux kernel when certain failure conditions occurred. A
\nlocal attacker could possibly use this to cause a denial of service (system
\ncrash) or possibly execute arbitrary code. (CVE-2018-20856)<\/p>\n
Eli Biham and Lior Neumann discovered that the Bluetooth implementation in
\nthe Linux kernel did not properly validate elliptic curve parameters during
\nDiffie-Hellman key exchange in some situations. An attacker could use this
\nto expose sensitive information. (CVE-2018-5383)<\/p>\n
It was discovered that a heap buffer overflow existed in the Marvell
\nWireless LAN device driver for the Linux kernel. An attacker could use this
\nto cause a denial of service (system crash) or possibly execute arbitrary
\ncode. (CVE-2019-10126)<\/p>\n
Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors
\nincorrectly handle SWAPGS instructions during speculative execution. A
\nlocal attacker could use this to expose sensitive information (kernel
\nmemory). (CVE-2019-1125)<\/p>\n
It was discovered that the PowerPC dlpar implementation in the Linux kernel
\ndid not properly check for allocation errors in some situations. A local
\nattacker could possibly use this to cause a denial of service (system
\ncrash). (CVE-2019-12614)<\/p>\n
It was discovered that a NULL pointer dereference vulnerabilty existed in
\nthe Near-field communication (NFC) implementation in the Linux kernel. An
\nattacker could use this to cause a denial of service (system crash).
\n(CVE-2019-12818)<\/p>\n
It was discovered that the MDIO bus devices subsystem in the Linux kernel
\nimproperly dropped a device reference in an error condition, leading to a
\nuse-after-free. An attacker could use this to cause a denial of service
\n(system crash). (CVE-2019-12819)<\/p>\n
It was discovered that a NULL pointer dereference vulnerability existed in
\nthe Near-field communication (NFC) implementation in the Linux kernel. A
\nlocal attacker could use this to cause a denial of service (system crash).
\n(CVE-2019-12984)<\/p>\n
Jann Horn discovered a use-after-free vulnerability in the Linux kernel
\nwhen accessing LDT entries in some situations. A local attacker could use
\nthis to cause a denial of service (system crash) or possibly execute
\narbitrary code. (CVE-2019-13233)<\/p>\n
Jann Horn discovered that the ptrace implementation in the Linux kernel did
\nnot properly record credentials in some situations. A local attacker could
\nuse this to cause a denial of service (system crash) or possibly gain
\nadministrative privileges. (CVE-2019-13272)<\/p>\n
It was discovered that the Empia EM28xx DVB USB device driver
\nimplementation in the Linux kernel contained a use-after-free vulnerability
\nwhen disconnecting the device. An attacker could use this to cause a denial
\nof service (system crash). (CVE-2019-2024)<\/p>\n
It was discovered that the USB video device class implementation in the
\nLinux kernel did not properly validate control bits, resulting in an out of
\nbounds buffer read. A local attacker could use this to possibly expose
\nsensitive information (kernel memory). (CVE-2019-2101)<\/p>\n
It was discovered that the Marvell Wireless LAN device driver in the Linux
\nkernel did not properly validate the BSS descriptor. A local attacker could
\npossibly use this to cause a denial of service (system crash) or possibly
\nexecute arbitrary code. (CVE-2019-3846)<\/p>\n
It was discovered that the Appletalk IP encapsulation driver in the Linux
\nkernel did not properly prevent kernel addresses from being copied to user
\nspace. A local attacker with the CAP_NET_ADMIN capability could use this to
\nexpose sensitive information. (CVE-2018-20511)<\/p>\n
The problem can be corrected by updating your system to the following package versions:<\/p>\n
To update your system, please follow these instructions: https:\/\/wiki.ubuntu.com\/Security\/Upgrades<\/a>.<\/p>\n After a standard system update you need to reboot your computer to make ATTENTION: Due to an unavoidable ABI change the kernel updates have Source: USN-4094-1: Linux kernel vulnerabilities<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" USN-4094-1: Linux kernel vulnerabilities linux, linux-hwe, linux-azure, linux-gcp, linux-gke-4.15, 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-gcp – 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 processors linux-oracle – Linux kernel for Oracle Cloud systems linux-raspi2 – Linux kernel for Raspberry Pi 2 linux-snapdragon – Linux kernel for Snapdragon processors linux-azure – Linux kernel for Microsoft Azure Cloud systems linux-hwe – Linux hardware enablement (HWE) kernel Details It was discovered that the alarmtimer implementation in the Linux kernel contained an integer overflow vulnerability. A local [ more… ]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[586],"tags":[587],"class_list":["post-32385","post","type-post","status-publish","format-standard","hentry","category-ubuntu-usn","tag-ubuntu-usn"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/32385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/comments?post=32385"}],"version-history":[{"count":1,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/32385\/revisions"}],"predecessor-version":[{"id":32386,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/32385\/revisions\/32386"}],"wp:attachment":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/media?parent=32385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/categories?post=32385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/tags?post=32385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nall the necessary changes.<\/p>\n
\nbeen given a new version number, which requires you to recompile and
\nreinstall all third party kernel modules you might have installed.
\nUnless you manually uninstalled the standard kernel metapackages
\n(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
\nlinux-powerpc), a standard system upgrade will automatically perform
\nthis as well.<\/p>\nReferences<\/h2>\n
\n