The bpf_int_jit_compile function in arch/x86/net/bpf_jit_comp.c in the Linux kernel before 4.0.6 allows local users to cause a denial of service (system crash) by creating a packet filter and then loading crafted BPF instructions that trigger late convergence by the JIT compiler.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-4700
• torvalds/linux@3f7352b
• https://bugzilla.redhat.com/show_bug.cgi?id=1233615
• https://support.f5.com/csp/article/K05211147
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3f7352bf21f8fd7ba3e2fcef9488756f188e12be
• http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html
• http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html
• http://rhn.redhat.com/errata/RHSA-2015-1778.html
• http://www.debian.org/security/2015/dsa-3329
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.6
• http://www.openwall.com/lists/oss-security/2015/06/23/2
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
• http://www.securityfocus.com/bid/75356
• http://www.securitytracker.com/id/1033046
• http://www.ubuntu.com/usn/USN-2679-1
• http://www.ubuntu.com/usn/USN-2680-1
• http://www.ubuntu.com/usn/USN-2681-1
• http://www.ubuntu.com/usn/USN-2683-1
• http://www.ubuntu.com/usn/USN-2684-1