==========================================================================
\nUbuntu Security Notice USN-6256-1
\nJuly 26, 2023<\/p>\n
linux-iot vulnerabilities
\n==========================================================================<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 20.04 LTSubuntu-security-announce@lists.ubuntu.com<\/p>\n
Summary:<\/p>\n
Several security issues were fixed in the Linux kernel.<\/p>\n
Software Description:
\n– linux-iot: Linux kernel for IoT platforms<\/p>\n
Details:<\/p>\n
Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon
\nGPU devices did not properly validate memory allocation in certain
\nsituations, leading to a null pointer dereference vulnerability. A local
\nattacker could use this to cause a denial of service (system crash).
\n(CVE-2022-3108)<\/p>\n
Zheng Wang discovered that the Intel i915 graphics driver in the Linux
\nkernel did not properly handle certain error conditions, leading to a
\ndouble-free. A local attacker could possibly use this to cause a denial of
\nservice (system crash). (CVE-2022-3707)<\/p>\n
It was discovered that the infrared transceiver USB driver did not properly
\nhandle USB control messages. A local attacker with physical access could
\nplug in a specially crafted USB device to cause a denial of service (memory
\nexhaustion). (CVE-2022-3903)<\/p>\n
Haowei Yan discovered that a race condition existed in the Layer 2
\nTunneling Protocol (L2TP) implementation in the Linux kernel. A local
\nattacker could possibly use this to cause a denial of service (system
\ncrash). (CVE-2022-4129)<\/p>\n
Jordy Zomer and Alexandra Sandulescu discovered that syscalls invoking the
\ndo_prlimit() function in the Linux kernel did not properly handle
\nspeculative execution barriers. A local attacker could use this to expose
\nsensitive information (kernel memory). (CVE-2023-0458)<\/p>\n
Jordy Zomer and Alexandra Sandulescu discovered that the Linux kernel did
\nnot properly implement speculative execution barriers in usercopy functions
\nin certain situations. A local attacker could use this to expose sensitive
\ninformation (kernel memory). (CVE-2023-0459)<\/p>\n
It was discovered that the Human Interface Device (HID) support driver in
\nthe Linux kernel contained a type confusion vulnerability in some
\nsituations. A local attacker could use this to cause a denial of service
\n(system crash). (CVE-2023-1073)<\/p>\n
It was discovered that a memory leak existed in the SCTP protocol
\nimplementation in the Linux kernel. A local attacker could use this to
\ncause a denial of service (memory exhaustion). (CVE-2023-1074)<\/p>\n
It was discovered that the TLS subsystem in the Linux kernel contained a
\ntype confusion vulnerability in some situations. A local attacker could use
\nthis to cause a denial of service (system crash) or possibly expose
\nsensitive information. (CVE-2023-1075)<\/p>\n
It was discovered that the TUN\/TAP driver in the Linux kernel did not
\nproperly initialize socket data. A local attacker could use this to cause a
\ndenial of service (system crash). (CVE-2023-1076)<\/p>\n
It was discovered that the Real-Time Scheduling Class implementation in the
\nLinux kernel contained a type confusion vulnerability in some situations. A
\nlocal attacker could use this to cause a denial of service (system crash).
\n(CVE-2023-1077)<\/p>\n
It was discovered that the Reliable Datagram Sockets (RDS) protocol
\nimplementation in the Linux kernel contained a type confusion vulnerability
\nin some situations. An attacker could use this to cause a denial of service
\n(system crash). (CVE-2023-1078)<\/p>\n
It was discovered that the ASUS HID driver in the Linux kernel did not
\nproperly handle device removal, leading to a use-after-free vulnerability.
\nA local attacker with physical access could plug in a specially crafted USB
\ndevice to cause a denial of service (system crash). (CVE-2023-1079)<\/p>\n
Duoming Zhou discovered that a race condition existed in the infrared
\nreceiver\/transceiver driver in the Linux kernel, leading to a use-after-
\nfree vulnerability. A privileged attacker could use this to cause a denial
\nof service (system crash) or possibly execute arbitrary code.
\n(CVE-2023-1118)<\/p>\n
It was discovered that the Traffic-Control Index (TCINDEX) implementation
\nin the Linux kernel contained a use-after-free vulnerability. A local
\nattacker could use this to cause a denial of service (system crash) or
\npossibly execute arbitrary code. (CVE-2023-1281)<\/p>\n
It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
\nkernel did not properly perform data buffer size validation in some
\nsituations. A physically proximate attacker could use this to craft a
\nmalicious USB device that when inserted, could cause a denial of service
\n(system crash) or possibly expose sensitive information. (CVE-2023-1380)<\/p>\n
Xingyuan Mo discovered that the x86 KVM implementation in the Linux kernel
\ndid not properly initialize some data structures. A local attacker could
\nuse this to expose sensitive information (kernel memory). (CVE-2023-1513)<\/p>\n
It was discovered that the Xircom PCMCIA network device driver in the Linux
\nkernel did not properly handle device removal events. A physically
\nproximate attacker could use this to cause a denial of service (system
\ncrash). (CVE-2023-1670)<\/p>\n
It was discovered that the Traffic-Control Index (TCINDEX) implementation
\nin the Linux kernel did not properly perform filter deactivation in some
\nsituations. A local attacker could possibly use this to gain elevated
\nprivileges. Please note that with the fix for this CVE, kernel support for
\nthe TCINDEX classifier has been removed. (CVE-2023-1829)<\/p>\n
It was discovered that a race condition existed in the Xen transport layer
\nimplementation for the 9P file system protocol in the Linux kernel, leading
\nto a use-after-free vulnerability. A local attacker could use this to cause
\na denial of service (guest crash) or expose sensitive information (guest
\nkernel memory). (CVE-2023-1859)<\/p>\n
Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2
\nmitigations with prctl syscall were insufficient in some situations. A
\nlocal attacker could possibly use this to expose sensitive information.
\n(CVE-2023-1998)<\/p>\n
It was discovered that a use-after-free vulnerability existed in the iSCSI
\nTCP implementation in the Linux kernel. A local attacker could possibly use
\nthis to cause a denial of service (system crash). (CVE-2023-2162)<\/p>\n
It was discovered that the BigBen Interactive Kids’ gamepad driver in the
\nLinux kernel did not properly handle device removal, leading to a use-
\nafter-free vulnerability. A local attacker with physical access could plug
\nin a specially crafted USB device to cause a denial of service (system
\ncrash). (CVE-2023-25012)<\/p>\n
Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu
\nLinux kernel contained a race condition when handling inode locking in some
\nsituations. A local attacker could use this to cause a denial of service
\n(kernel deadlock). (CVE-2023-2612)<\/p>\n
Lianhui Tang discovered that the MPLS implementation in the Linux kernel
\ndid not properly handle certain sysctl allocation failure conditions,
\nleading to a double-free vulnerability. An attacker could use this to cause
\na denial of service or possibly execute arbitrary code. (CVE-2023-26545)<\/p>\n
It was discovered that a use-after-free vulnerability existed in the HFS+
\nfile system implementation in the Linux kernel. A local attacker could
\npossibly use this to cause a denial of service (system crash).
\n(CVE-2023-2985)<\/p>\n
Reima Ishii discovered that the nested KVM implementation for Intel x86
\nprocessors in the Linux kernel did not properly validate control registers
\nin certain situations. An attacker in a guest VM could use this to cause a
\ndenial of service (guest crash). (CVE-2023-30456)<\/p>\n
Gwangun Jung discovered that the Quick Fair Queueing scheduler
\nimplementation in the Linux kernel contained an out-of-bounds write
\nvulnerability. A local attacker could use this to cause a denial of service
\n(system crash) or possibly execute arbitrary code. (CVE-2023-31436)<\/p>\n
Sanan Hasanov discovered that the framebuffer console driver in the Linux
\nkernel did not properly perform checks for font dimension limits. A local
\nattacker could use this to cause a denial of service (system crash).
\n(CVE-2023-3161)<\/p>\n
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
\nthe netfilter subsystem of the Linux kernel when processing batch requests,
\nleading to a use-after-free vulnerability. A local attacker could use this
\nto cause a denial of service (system crash) or possibly execute arbitrary
\ncode. (CVE-2023-32233)<\/p>\n
It was discovered that the NET\/ROM protocol implementation in the Linux
\nkernel contained a race condition in some situations, leading to a use-
\nafter-free vulnerability. A local attacker could use this to cause a denial
\nof service (system crash) or possibly execute arbitrary code.
\n(CVE-2023-32269)<\/p>\n
Hangyu Hua discovered that the Flower classifier implementation in the
\nLinux kernel contained an out-of-bounds write vulnerability. An attacker
\ncould use this to cause a denial of service (system crash) or possibly
\nexecute arbitrary code. (CVE-2023-35788)<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 20.04 LTS:
\nlinux-image-5.4.0-1017-iot 5.4.0-1017.18<\/p>\n
After a standard system update you need to reboot your computer to make
\nall the necessary changes.<\/p>\n
ATTENTION: Due to an unavoidable ABI change the kernel updates have
\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>\n
References:
\nhttps:\/\/ubuntu.com\/security\/notices\/USN-6256-1
\nCVE-2022-3108, CVE-2022-3707, CVE-2022-3903, CVE-2022-4129,
\nCVE-2023-0458, CVE-2023-0459, CVE-2023-1073, CVE-2023-1074,
\nCVE-2023-1075, CVE-2023-1076, CVE-2023-1077, CVE-2023-1078,
\nCVE-2023-1079, CVE-2023-1118, CVE-2023-1281, CVE-2023-1380,
\nCVE-2023-1513, CVE-2023-1670, CVE-2023-1829, CVE-2023-1859,
\nCVE-2023-1998, CVE-2023-2162, CVE-2023-25012, CVE-2023-2612,
\nCVE-2023-26545, CVE-2023-2985, CVE-2023-30456, CVE-2023-31436,
\nCVE-2023-3161, CVE-2023-32233, CVE-2023-32269, CVE-2023-35788<\/p>\n
Package Information:
\nhttps:\/\/launchpad.net\/ubuntu\/+source\/linux-iot\/5.4.0-1017.18<\/p>\n","protected":false},"excerpt":{"rendered":"
========================================================================== Ubuntu Security Notice USN-6256-1 July 26, 2023 linux-iot vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: – Ubuntu 20.04 LTSubuntu-security-announce@lists.ubuntu.com Summary: Several security issues were fixed in the Linux kernel. Software Description: – linux-iot: Linux kernel for IoT platforms Details: Jiasheng Jiang discovered that the HSA Linux kernel driver …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-45681","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/45681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=45681"}],"version-history":[{"count":2,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/45681\/revisions"}],"predecessor-version":[{"id":45953,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/45681\/revisions\/45953"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=45681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=45681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=45681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}