Description
iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, although not a default, are sometimes a configuration option offered to end users. Even when setuid is used, other factors (such as C library configuration) may block exploitability.
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 | iproute2 | 5.2.0-1 | — |
| Debian 13 | iproute2 | 5.2.0-1 | — |
| Debian 12 | iproute2 | 5.2.0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | iproute2 | 4.15.0-2ubuntu1.1 | USN-4357-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | iproute2 | 4.12-16.6.1 | SUSE-SU-2021:3452-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | iproute2 | 4.12-16.6.1 | SUSE-SU-2021:3452-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.23 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.22 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.21 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.20 | iproute2 | 5.1.0-r0 | — |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.18 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.17 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.16 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.15 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.14 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.13 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.12 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.11 | iproute2 | 5.1.0-r0 | — |
| Alpine v3.10 | iproute2 | 4.20.0-r2 | — |
| Alpine v3.9 | iproute2 | 4.19.0-r1 | — |
Advisories 4
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- USN-4357-1 iproute2 vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- SUSE-SU-2021:3452-1 Security update for iproute2 SUSE / openSUSE Security Updates · May 2, 2025