high7.8
CVE-2026-52909
In the Linux kernel, the following vulnerability has been resolved: ip6_vti: set netns_immutable on the fallback device.
Impact
In the Linux kernel, the following vulnerability has been resolved: ip6_vti: set netns_immutable on the fallback device. john1988 and Noam Rathaus reported that vti6_init_net() does not set the netns_immutable flag on the per-netns fallback tunnel device (ip6_vti0). Other similar tunnel drivers (like ip6_tunnel, sit, ip6_gre, and ip_tunnel) correctly set this flag during their fallback device initialization to prevent them from being moved to another network namespace.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 3.15 before 5.10.260 from 5.11 before 5.15.211 from 5.16 before 6.1.177 from 6.2 before 6.6.144 from 6.7 before 6.12.95 from 6.13 before 6.18.36 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/12acc977838c943636fb01e2f3087d2e4cc3b7cc
- https://git.kernel.org/stable/c/12c65e2c7fef507551bd7b52123598a761662c01
- https://git.kernel.org/stable/c/7f28e3948c59481f8db9c9638e204258d26b4e41
- https://git.kernel.org/stable/c/c5dbd669db5a426b3025512322e1bf2cdbe14305
- https://git.kernel.org/stable/c/d289d5307762d1838aaece22c6b6fcad9e8865f9
- https://git.kernel.org/stable/c/dcdce3bc9f08026ff3739ee7339e1bef526fc5f3
- https://git.kernel.org/stable/c/ecf8904067dcba0dad86ece80874841e60317885
- https://git.kernel.org/stable/c/f4b6b4af7ef0661ac153c6f7eb1030aa8482c1a3
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html