ALAS-2017-870


Amazon Linux AMI Security Advisory: ALAS-2017-870
Advisory Release Date: 2017-11-03 05:45 Pacific
Severity: Important

Issue Overview:

Buffer overflow in mp_override_legacy_irq():
Buffer overflow in the mp_override_legacy_irq() function in arch/x86/kernel/acpi/boot.c in the Linux kernel through 4.12.2 allows local users to gain privileges via a crafted ACPI table. (CVE-2017-11473 )

A race between inotify_handle_event() and sys_rename():
A race condition was found in the Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data, which may lead to the privilege escalation. (CVE-2017-7533 )

Integer overflow in ip6_find_1stfragopt() causes infinite loop:
An integer overflow vulnerability in ip6_find_1stfragopt() function was found. A local attacker that has privileges (of CAP_NET_RAW) to open raw socket can cause an infinite loop inside the ip6_find_1stfragopt() function.(CVE-2017-7542 )

Double fetch vulnerability in saa7164_bus_get function The saa7164_bus_get function in drivers/media/pci/saa7164/saa7164-bus.c in the Linux kernel through 4.10.14 allows local users to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact by changing a certain sequence-number value, aka a "double fetch" vulnerability. Please note, the saa7164 driver is not enabled in the Amazon Linux AMI kernel (CVE-2017-8831 )


Affected Packages:

kernel


Issue Correction:
Run yum update kernel to update your system.

New Packages:
i686:
    perf-4.9.43-17.38.amzn1.i686
    kernel-tools-devel-4.9.43-17.38.amzn1.i686
    kernel-tools-4.9.43-17.38.amzn1.i686
    kernel-tools-debuginfo-4.9.43-17.38.amzn1.i686
    kernel-headers-4.9.43-17.38.amzn1.i686
    kernel-debuginfo-common-i686-4.9.43-17.38.amzn1.i686
    kernel-debuginfo-4.9.43-17.38.amzn1.i686
    kernel-devel-4.9.43-17.38.amzn1.i686
    perf-debuginfo-4.9.43-17.38.amzn1.i686
    kernel-4.9.43-17.38.amzn1.i686

noarch:
    kernel-doc-4.9.43-17.38.amzn1.noarch

src:
    kernel-4.9.43-17.38.amzn1.src

x86_64:
    kernel-headers-4.9.43-17.38.amzn1.x86_64
    perf-4.9.43-17.38.amzn1.x86_64
    kernel-4.9.43-17.38.amzn1.x86_64
    kernel-debuginfo-4.9.43-17.38.amzn1.x86_64
    kernel-tools-debuginfo-4.9.43-17.38.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.9.43-17.38.amzn1.x86_64
    kernel-tools-4.9.43-17.38.amzn1.x86_64
    perf-debuginfo-4.9.43-17.38.amzn1.x86_64
    kernel-devel-4.9.43-17.38.amzn1.x86_64
    kernel-tools-devel-4.9.43-17.38.amzn1.x86_64