- Issued:
- 2017-10-19
- Updated:
- 2017-10-19
RHBA-2017:2919 - iptables bugfix update
Synopsis
iptables bugfix update
Type/Severity
Bug Fix Advisory None
Topic
Updated iptables packages that fix several bugs are now available for Red Hat Enterprise Linux 7.
Description
The iptables utility controls the network packet filtering code in the Linux kernel.
This update fixes the following bugs:
-
Previously, at boot time or after running the "systemctl restart iptables ip6tables" command, the systemd service was running both iptables and ip6tables services in parallel. Due to the internal locking mechanism that prevented concurrent updates, one of the two services failed to start. This update adds the --wait option to the "iptables-restore" and "ip6tables-restore" commands to make them wait until the lock becomes free, and the described problem no longer occurs. (BZ#1481207)
-
In Red Hat Enterprise Linux 7.3, the iptables-services package contained a post-uninstall script that caused iptables, the ip6tables services, or both to restart. As a consequence, the current configuration was replaced with a manually saved configuration in the /etc/sysconfig/ip6tables file. This update removes the "service restart" command from the post-uninstall script. As a result, updates to the package do not cause a service restart. (BZ#1491961)
-
Previously, when stopping iptables or ip6tables services, a script tried to unload the netfilter modules related to the given address family. Since there were modules that both address families used, a potential race condition created when both services restarted simultaneously. This update adds the AFTER and BEFORE keywords in the service files. As a result, both services run in sequence, and "systemctl restart iptables ip6tables" works as expected. (BZ#1491963)
Users of iptables are advised to upgrade to these updated packages, which fix these bugs.
Solution
Before applying this update, make sure all previously released errata relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.7 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.6 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions | 7.4 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.7 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.6 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.5 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 7.4 | x86_64 |
| Red Hat Enterprise Linux for Scientific Computing | 7 | x86_64 |
| Red Hat Enterprise Linux for Power, little endian | 7 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 7.7 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 7.6 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 7.5 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 7.4 | ppc64le |
| Red Hat Enterprise Linux for Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.7 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.6 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.5 | ppc64 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 7.4 | ppc64 |
| Red Hat Enterprise Linux for IBM z Systems | 7 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 7.7 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 7.6 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 7.5 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 7.4 | s390x |
| Red Hat Enterprise Linux Workstation | 7 | x86_64 |
| Red Hat Enterprise Linux Server | 7 | x86_64 |
| Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions | 7.7 | ppc64le |
| Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions | 7.6 | ppc64le |
| Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions | 7.4 | ppc64le |
| Red Hat Enterprise Linux Server - TUS | 7.7 | x86_64 |
| Red Hat Enterprise Linux Server - TUS | 7.6 | x86_64 |
| Red Hat Enterprise Linux Server - TUS | 7.4 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support | 7 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian | 7 | ppc64le |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian | 7 | ppc64 |
| Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) | 7 | s390x |
| Red Hat Enterprise Linux Server - AUS | 7.7 | x86_64 |
| Red Hat Enterprise Linux Server - AUS | 7.6 | x86_64 |
| Red Hat Enterprise Linux Server - AUS | 7.4 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.7 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.6 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.5 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 7.4 | x86_64 |
| Red Hat Enterprise Linux Desktop | 7 | x86_64 |
Updated Packages
- iptables-debuginfo-1.4.21-18.2.el7_4.i686.rpm
- iptables-devel-1.4.21-18.2.el7_4.s390x.rpm
- iptables-1.4.21-18.2.el7_4.s390.rpm
- iptables-services-1.4.21-18.2.el7_4.ppc64le.rpm
- iptables-devel-1.4.21-18.2.el7_4.ppc64le.rpm
- iptables-services-1.4.21-18.2.el7_4.ppc64.rpm
- iptables-debuginfo-1.4.21-18.2.el7_4.s390x.rpm
- iptables-1.4.21-18.2.el7_4.ppc64.rpm
- iptables-utils-1.4.21-18.2.el7_4.aarch64.rpm
- iptables-1.4.21-18.2.el7_4.ppc.rpm
- iptables-debuginfo-1.4.21-18.2.el7_4.ppc.rpm
- iptables-1.4.21-18.2.el7_4.ppc64le.rpm
- iptables-utils-1.4.21-18.2.el7_4.ppc64.rpm
- iptables-debuginfo-1.4.21-18.2.el7_4.aarch64.rpm
- iptables-utils-1.4.21-18.2.el7_4.ppc64le.rpm
- iptables-devel-1.4.21-18.2.el7_4.s390.rpm
- iptables-devel-1.4.21-18.2.el7_4.x86_64.rpm
- iptables-devel-1.4.21-18.2.el7_4.aarch64.rpm
- iptables-1.4.21-18.2.el7_4.x86_64.rpm
- iptables-1.4.21-18.2.el7_4.s390x.rpm
- iptables-services-1.4.21-18.2.el7_4.x86_64.rpm
- iptables-utils-1.4.21-18.2.el7_4.x86_64.rpm
- iptables-services-1.4.21-18.2.el7_4.s390x.rpm
- iptables-1.4.21-18.2.el7_4.i686.rpm
- iptables-debuginfo-1.4.21-18.2.el7_4.x86_64.rpm
- iptables-debuginfo-1.4.21-18.2.el7_4.ppc64.rpm
- iptables-1.4.21-18.2.el7_4.aarch64.rpm
- iptables-1.4.21-18.2.el7_4.src.rpm
- iptables-services-1.4.21-18.2.el7_4.aarch64.rpm
- iptables-debuginfo-1.4.21-18.2.el7_4.ppc64le.rpm
- iptables-devel-1.4.21-18.2.el7_4.i686.rpm
- iptables-utils-1.4.21-18.2.el7_4.s390x.rpm
- iptables-debuginfo-1.4.21-18.2.el7_4.s390.rpm
- iptables-devel-1.4.21-18.2.el7_4.ppc.rpm
- iptables-devel-1.4.21-18.2.el7_4.ppc64.rpm
Fixes
- This content is not included.BZ - 1481207
- This content is not included.BZ - 1491961
- This content is not included.BZ - 1491963
CVEs
(none)
References
(none)
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.