Description
The nf_nat_redirect_ipv4 function in net/netfilter/nf_nat_redirect.c in the Linux kernel before 4.4 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by sending certain IPv4 packets to an incompletely configured interface, a related issue to CVE-2003-1604.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.3.5-1 | — |
| Debian 13 | linux | 4.3.5-1 | — |
| Debian 12 | linux | 4.3.5-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-49.55~14.04.1 | USN-2889-2 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-27.32~14.04.1 | USN-2890-2 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.6.el6uek | 0.5.3-2.el6 | ELSA-2016-3596 |
| Oracle Linux 7 | dtrace-modules-4.1.12-61.1.6.el7uek | 0.5.3-2.el7 | ELSA-2016-3596 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-61.1.6.el7uek | ELSA-2016-3596 |
Advisories 3
- USN-2889-2 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2890-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- ELSA-2016-3596 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 26, 2016
References
- [oss-security] 20160127 CVE Request: Linux: NULL pointer dereference netfilter/nf_nat_redirect.c in nf_nat_redirect_ipv4 function mailing-list
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- https://github.com/torvalds/linux/commit/94f9cd81436c85d8c3a318ba92e236ede73752fc
- USN-2890-3 vendor-advisory
- USN-2889-1 vendor-advisory
- USN-2889-2 vendor-advisory
- FEDORA-2016-5d43766e33 vendor-advisory
- USN-2890-2 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- USN-2890-1 vendor-advisory
- openSUSE-SU-2016:1008 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300731
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=94f9cd81436c85d8c3a318ba92e236ede73752fc
- FEDORA-2016-2f25d12c51 vendor-advisory