CVE-2013-1767

Published: 28 February 2013

Use-after-free vulnerability in the shmem_remount_fs function in mm/shmem.c in the Linux kernel before 3.7.10 allows local users to gain privileges or cause a denial of service (system crash) by remounting a tmpfs filesystem without specifying a required mpol (aka mempolicy) mount option.

From the Ubuntu security team

A memory use after free error was discover in the Linux kernel's tmpfs filesystem. A local user could exploit this flaw to gain privileges or cause a denial of service (system crash).

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1767
• https://github.com/torvalds/linux/commit/5f00110f7273f9ff04ac69a5f85bb535a4fd0987
• https://bugzilla.redhat.com/show_bug.cgi?id=915592
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5f00110f7273f9ff04ac69a5f85bb535a4fd0987
• http://www.openwall.com/lists/oss-security/2013/02/25/23
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.10
• https://ubuntu.com/security/notices/USN-1787-1
• https://ubuntu.com/security/notices/USN-1788-1
• https://ubuntu.com/security/notices/USN-1792-1
• https://ubuntu.com/security/notices/USN-1793-1
• https://ubuntu.com/security/notices/USN-1794-1
• https://ubuntu.com/security/notices/USN-1795-1
• https://ubuntu.com/security/notices/USN-1796-1
• https://ubuntu.com/security/notices/USN-1797-1
• https://ubuntu.com/security/notices/USN-1798-1
• NVD
• Launchpad
• Debian

Bugs

• https://launchpad.net/bugs/1143815