The kernel packages contain the Linux kernel, the core of any Linux
operating system.
A flaw was found in the way the Linux kernel’s floppy driver handled user
space provided data in certain error code paths while processing FDRAWCMD
IOCTL commands. A local user with write access to /dev/fdX could use this
flaw to free (using the kfree() function) arbitrary kernel memory.
(CVE-2014-1737, Important)
It was found that the Linux kernel’s floppy driver leaked internal kernel
memory addresses to user space during the processing of the FDRAWCMD IOCTL
command. A local user with write access to /dev/fdX could use this flaw to
obtain information about the kernel heap arrangement. (CVE-2014-1738, Low)
Note: A local user with write access to /dev/fdX could use these two flaws
(CVE-2014-1737 in combination with CVE-2014-1738) to escalate their
privileges on the system.
Red Hat would like to thank Matthew Daley for reporting CVE-2014-1737 and
CVE-2014-1738.
This update also fixes the following bugs:
While under heavy load, some Fibre Channel storage devices, such as
Hitachi and HP Open-V series, can send a logout (LOGO) message to the host
system. However, due to a bug in the lpfc driver, this could result in a
loss of active paths to the storage and the paths could not be recovered
without manual intervention. This update corrects the lpfc driver to ensure
automatic recovery of the lost paths to the storage in this scenario.
(BZ#1096060)
A bug in the futex system call could result in an overflow when passing a
very large positive timeout. As a consequence, the FUTEX_WAIT operation did
not work as intended and the system call was timing out immediately.
A backported patch fixes this bug by limiting very large positive timeouts
to the maximal supported value. (BZ#1091831)
All kernel users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. The system must be
rebooted for this update to take effect.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
RedHat | 5 | ppc | kernel-headers | < 2.6.18-348.27.1.el5 | kernel-headers-2.6.18-348.27.1.el5.ppc.rpm |
RedHat | 5 | s390x | kernel-debug | < 2.6.18-348.27.1.el5 | kernel-debug-2.6.18-348.27.1.el5.s390x.rpm |
RedHat | 5 | src | kernel | < 2.6.18-348.27.1.el5 | kernel-2.6.18-348.27.1.el5.src.rpm |
RedHat | 5 | x86_64 | kernel-xen-debuginfo | < 2.6.18-348.27.1.el5 | kernel-xen-debuginfo-2.6.18-348.27.1.el5.x86_64.rpm |
RedHat | 5 | s390x | kernel-debug-debuginfo | < 2.6.18-348.27.1.el5 | kernel-debug-debuginfo-2.6.18-348.27.1.el5.s390x.rpm |
RedHat | 5 | x86_64 | kernel-debuginfo | < 2.6.18-348.27.1.el5 | kernel-debuginfo-2.6.18-348.27.1.el5.x86_64.rpm |
RedHat | 5 | x86_64 | kernel-devel | < 2.6.18-348.27.1.el5 | kernel-devel-2.6.18-348.27.1.el5.x86_64.rpm |
RedHat | 5 | s390x | kernel-debug-devel | < 2.6.18-348.27.1.el5 | kernel-debug-devel-2.6.18-348.27.1.el5.s390x.rpm |
RedHat | 5 | i686 | kernel-debug-debuginfo | < 2.6.18-348.27.1.el5 | kernel-debug-debuginfo-2.6.18-348.27.1.el5.i686.rpm |
RedHat | 5 | ia64 | kernel-headers | < 2.6.18-348.27.1.el5 | kernel-headers-2.6.18-348.27.1.el5.ia64.rpm |