Amazon Linux 1 Security Advisory: ALAS-2014-392
Advisory Release Date: 2014-08-21 11:03 Pacific
Advisory Updated Date: 2014-09-19 11:43 Pacific
The media_device_enum_entities function in drivers/media/media-device.c in the Linux kernel before 3.14.6 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory by leveraging /dev/media0 read access for a MEDIA_IOC_ENUM_ENTITIES ioctl call.
A flaw was found in the way the Linux kernel's futex subsystem handled the requeuing of certain Priority Inheritance (PI) futexes. A local, unprivileged user could use this flaw to escalate their privileges on the system.
The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.
Affected Packages:
kernel
Issue Correction:
Run yum update kernel to update your system. You will need to reboot your system in order for the new kernel to be running.
i686:
perf-debuginfo-3.10.53-56.140.amzn1.i686
kernel-headers-3.10.53-56.140.amzn1.i686
perf-3.10.53-56.140.amzn1.i686
kernel-3.10.53-56.140.amzn1.i686
kernel-debuginfo-3.10.53-56.140.amzn1.i686
kernel-debuginfo-common-i686-3.10.53-56.140.amzn1.i686
kernel-devel-3.10.53-56.140.amzn1.i686
noarch:
kernel-doc-3.10.53-56.140.amzn1.noarch
src:
kernel-3.10.53-56.140.amzn1.src
x86_64:
kernel-headers-3.10.53-56.140.amzn1.x86_64
kernel-3.10.53-56.140.amzn1.x86_64
kernel-debuginfo-3.10.53-56.140.amzn1.x86_64
kernel-devel-3.10.53-56.140.amzn1.x86_64
kernel-debuginfo-common-x86_64-3.10.53-56.140.amzn1.x86_64
perf-3.10.53-56.140.amzn1.x86_64
perf-debuginfo-3.10.53-56.140.amzn1.x86_64