Information disclosure in Linux kernel - CVE-2013-3076

Vulnerability details

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

The crypto API in the Linux kernel through 3.9-rc8 does not initialize certain length variables, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call, related to the hash_recvmsg function in crypto/algif_hash.c and the skcipher_recvmsg function in crypto/algif_skcipher.c.

Affected software

How to mitigate CVE-2013-3076

External References

• 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-security-announce/2013-07/msg00016.html
• http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
• 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/72a763d805a48ac8c0bf48fdb510e84c12de51fe

Related Security Bulletins

• Information disclosure in Linux kernel
• SUSE Linux update for Linux kernel