Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: do not keep dest_dst if dev is going down There is race between the netdev notifier ip_vs_dst_event() and the code that caches dst with dev that is going down. As the FIB can be notified for the closed device after our handler finishes, it is possible valid route to be returned and cached resuling in a leaked dev reference until the dest is not removed. To prevent new dest_dst to be attached to dest just after the handler dropped the old one, add a netif_running() check to make sure the notifier handler is not currently running for device that is closing.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.39.1, < 6.12.75 |
References
- https://git.kernel.org/stable/c/024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3ePatch
- https://git.kernel.org/stable/c/64af43033503458c46023e56d6ae7bb0f824b55fPatch
- https://git.kernel.org/stable/c/8fde939b0206afc1d5846217a01a16b9bc8c7896Patch
- https://git.kernel.org/stable/c/bae53b3baf2ff2f45f9205c438818fc055601a54Patch
FAQ
What is CVE-2026-45917?
CVE-2026-45917 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: ipvs: do not keep dest_dst if dev is going down There is race between the netdev notifier ip_vs_dst_event() and the code that cach...
How severe is CVE-2026-45917?
CVE-2026-45917 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45917?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.