Description
The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://usn.ubuntu.com/3619-2/ ↗
- https://www.debian.org/security/2018/dsa-4082 ↗
- https://lkml.org/lkml/2017/12/5/950 ↗
- http://www.securityfocus.com/bid/102122 ↗
- https://access.redhat.com/errata/RHSA-2018:1062 ↗
- https://source.android.com/security/bulletin/pixel/2018-04-01 ↗
- https://access.redhat.com/errata/RHSA-2018:0654 ↗
- https://access.redhat.com/errata/RHSA-2018:0676 ↗
- https://usn.ubuntu.com/3653-2/ ↗
- https://usn.ubuntu.com/3655-1/ ↗
- https://access.redhat.com/errata/RHSA-2018:1170 ↗
- https://access.redhat.com/errata/RHSA-2018:1130 ↗
- https://www.debian.org/security/2017/dsa-4073 ↗
- https://usn.ubuntu.com/3655-2/ ↗
- https://usn.ubuntu.com/3653-1/ ↗
- https://usn.ubuntu.com/3657-1/ ↗
- https://usn.ubuntu.com/3619-1/ ↗