Information disclosure in Linux kernel - CVE-2013-3233

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The llcp_sock_recvmsg function in net/nfc/llcp/sock.c in the Linux kernel before 3.9-rc7 does not initialize a certain length variable and a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.

Affected software

How to mitigate CVE-2013-3233

External References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d26d6504f23e803824e8ebd14e52d4fc0a0b09cb
• http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103750.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104480.html
• http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
• http://www.openwall.com/lists/oss-security/2013/04/14/3
• http://www.ubuntu.com/usn/USN-1837-1
• https://github.com/torvalds/linux/commit/d26d6504f23e803824e8ebd14e52d4fc0a0b09cb
• https://lkml.org/lkml/2013/4/14/107

Related Security Bulletins

• Information disclosure in Linux kernel
• Ubuntu update for linux
• Ubuntu update for linux-lts-raring
• Ubuntu update for linux
• Ubuntu update for linux-lts-quantal