CVE-2015-3331

Published: 21 April 2015

The __driver_rfc4106_decrypt function in arch/x86/crypto/aesni-intel_glue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service (buffer overflow and system crash) or possibly execute arbitrary code by triggering a crypto API call, as demonstrated by use of a libkcapi test program with an AF_ALG(aead) socket.

From the Ubuntu security team

A memory corruption issue was discovered in AES decryption when using the Intel AES-NI accelerated code path. A remote attacker could exploit this flaw to cause a denial of service (system crash) or potentially escalate privileges on Intel base machines with AEC-GCM mode IPSec security association.

Notes

android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3331
• http://www.openwall.com/lists/oss-security/2015/04/14/16
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0bd82f5f6355775fbaf7d3c664432ce1b862be1e (introduced in)
• https://ubuntu.com/security/notices/USN-2613-1
• https://ubuntu.com/security/notices/USN-2614-1
• https://ubuntu.com/security/notices/USN-2615-1
• https://ubuntu.com/security/notices/USN-2616-1
• https://ubuntu.com/security/notices/USN-2631-1
• https://ubuntu.com/security/notices/USN-2632-1
• NVD
• Launchpad
• Debian

Bugs

• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=782561
• https://launchpad.net/bugs/1447367