CVE-2014-9428

Published: 2 January 2015

The batadv_frag_merge_packets function in net/batman-adv/fragmentation.c in the B.A.T.M.A.N. implementation in the Linux kernel through 3.18.1 uses an incorrect length field during a calculation of an amount of memory, which allows remote attackers to cause a denial of service (mesh-node system crash) via fragmented packets.

From the Ubuntu Security Team

A flaw was discovered in the fragment handling of the B.A.T.M.A.N. Advanced Meshing Protocol in the Linux kernel. A remote attacker could exploit this flaw to cause a denial of service (mesh-node system crash) via fragmented packets.

Notes

android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.04 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-2014-9428
• http://thread.gmane.org/gmane.linux.network/343494
• https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2014-November/012561.html
• https://github.com/torvalds/linux/commit/5b6698b0e4a37053de35cc24ee695b98a7eb712b
• http://www.spinics.net/lists/netdev/msg309425.html
• http://www.openwall.com/lists/oss-security/2014/12/31/7
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5b6698b0e4a37053de35cc24ee695b98a7eb712b
• http://bugs.debian.org/774155
• https://ubuntu.com/security/notices/USN-2515-1
• https://ubuntu.com/security/notices/USN-2516-1
• https://ubuntu.com/security/notices/USN-2517-1
• https://ubuntu.com/security/notices/USN-2518-1
• NVD
• Launchpad
• Debian

Bugs

• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=774155
• https://launchpad.net/bugs/1407952