RHSA-2014:0159: Important: kernel security and bug fix update

First published: Tue Feb 11 2014(Updated: )

The kernel packages contain the Linux kernel, the core of any Linux<br>operating system.<br><li> A buffer overflow flaw was found in the way the qeth_snmp_command()</li> function in the Linux kernel's QETH network device driver implementation<br>handled SNMP IOCTL requests with an out-of-bounds length. A local,<br>unprivileged user could use this flaw to crash the system or, potentially,<br>escalate their privileges on the system. (CVE-2013-6381, Important)<br><li> A flaw was found in the way the get_dumpable() function return value was</li> interpreted in the ptrace subsystem of the Linux kernel. When<br>'fs.suid_dumpable' was set to 2, a local, unprivileged local user could<br>use this flaw to bypass intended ptrace restrictions and obtain<br>potentially sensitive information. (CVE-2013-2929, Low)<br><li> It was found that certain protocol handlers in the Linux kernel's</li> networking implementation could set the addr_len value without initializing<br>the associated data structure. A local, unprivileged user could use this<br>flaw to leak kernel stack memory to user space using the recvmsg, recvfrom,<br>and recvmmsg system calls (CVE-2013-7263, CVE-2013-7265, Low).<br>This update also fixes several bugs. Documentation for these changes will<br>be available shortly from the Technical Notes document linked to in the<br>References section.<br>All kernel users are advised to upgrade to these updated packages, which<br>contain backported patches to correct these issues. The system must be<br>rebooted for this update to take effect.<br>

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