The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and ip6t_do_table in net/ipv6/netfilter/ip6_tables.c.
[
{
"product": "Linux kernel 4.15.0-rc9",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Linux kernel 4.15.0-rc9"
}
]
}
]
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=57ebd808a97d7c5b1e1afb937c2db22beba3c1f8
lists.openwall.net/netdev/2018/01/27/46
patchwork.ozlabs.org/patch/870355/
www.securitytracker.com/id/1040446
access.redhat.com/errata/RHSA-2018:2948
bugzilla.redhat.com/show_bug.cgi?id=1547824
github.com/torvalds/linux/commit/57ebd808a97d7c5b1e1afb937c2db22beba3c1f8
usn.ubuntu.com/3654-1/
usn.ubuntu.com/3654-2/
usn.ubuntu.com/3656-1/
www.debian.org/security/2018/dsa-4188