CVE-2013-7266

Published: 06 January 2014

The mISDN_sock_recvmsg function in drivers/isdn/mISDN/socket.c in the Linux kernel before 3.12.4 does not ensure that a certain length value is consistent with the size of an associated data structure, which allows local users to obtain sensitive information from kernel memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system call.

From the Ubuntu security team

An information leak was discovered in the recvfrom, recvmmsg, and recvmsg systemcalls when used with ISDN sockets in the Linux kernel. A local user could exploit this leak to obtain potentially sensitive information from kernel memory.

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-7266
• https://github.com/torvalds/linux/commit/f3d3342602f8bcbf37d7c46641cb9bca7618eb1c
• https://bugzilla.redhat.com/show_bug.cgi?id=1039845
• http://www.openwall.com/lists/oss-security/2013/12/31/7
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.4
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f3d3342602f8bcbf37d7c46641cb9bca7618eb1c
• https://ubuntu.com/security/notices/USN-2109-1
• https://ubuntu.com/security/notices/USN-2110-1
• https://ubuntu.com/security/notices/USN-2113-1
• https://ubuntu.com/security/notices/USN-2117-1
• https://ubuntu.com/security/notices/USN-2128-1
• https://ubuntu.com/security/notices/USN-2129-1
• https://ubuntu.com/security/notices/USN-2135-1
• https://ubuntu.com/security/notices/USN-2136-1
• https://ubuntu.com/security/notices/USN-2138-1
• https://ubuntu.com/security/notices/USN-2139-1
• https://ubuntu.com/security/notices/USN-2141-1
• NVD
• Launchpad
• Debian

Bugs

• https://launchpad.net/bugs/1267081