Description
Integer overflow in the xt_alloc_table_info function in net/netfilter/x_tables.c in the Linux kernel through 4.5.2 on 32-bit platforms allows local users to gain privileges or cause a denial of service (heap memory corruption) via an IPT_SO_SET_REPLACE setsockopt call.
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 | 4.4.6-1 | — |
| Debian 13 | linux | 4.4.6-1 | — |
| Debian 12 | linux | 4.4.6-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux | 4.4.0-34.53 | USN-3055-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1019.25 | USN-3056-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1022.25 | USN-3057-1 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-34.39~14.04.1 | USN-2930-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-34.53~14.04.1 | USN-3054-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 4.8.13-1.1 | openSUSE-SU-2024:10128-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Linux Kernel 3.10/3.18 /4.4 - Netfilter IPT_SO_SET_REPLACE Memory Corruption EDB-39545 · dos · Mar 9, 2016 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 7
- USN-3055-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3054-1 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3056-1 linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3057-1 linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2930-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:10128-1 kernel-debug-4.8.13-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-0149 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jan 17, 2024
References
- https://code.google.com/p/google-security-research/issues/detail?id=758
- USN-2930-1 vendor-advisory
- USN-3054-1 vendor-advisory
- USN-2930-2 vendor-advisory
- https://github.com/torvalds/linux/commit/d157bd761585605b7882935ffb86286919f62ea1
- USN-3055-1 vendor-advisory
- USN-3056-1 vendor-advisory
- USN-2930-3 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d157bd761585605b7882935ffb86286919f62ea1
- https://bugzilla.redhat.com/show_bug.cgi?id=1317386
- USN-3057-1 vendor-advisory
- 84305 vdb-entry