CVE-2026-45917
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Undergoing Analysis
Affected
- Linux Kernel < 6.12.75
- Linux Kernel < 6.18.14
- Linux Kernel < 6.19.4
- Linux Kernel 2.6.39
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-45917.md and follow it. Check whether this project is affected by CVE-2026-45917. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e
- https://git.kernel.org/stable/c/64af43033503458c46023e56d6ae7bb0f824b55f
- https://git.kernel.org/stable/c/8fde939b0206afc1d5846217a01a16b9bc8c7896
- https://git.kernel.org/stable/c/bae53b3baf2ff2f45f9205c438818fc055601a54
References
- https://git.kernel.org/stable/c/024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e
- https://git.kernel.org/stable/c/0b60fb44247eab81e7a9490c38ca62c7120eec75
- https://git.kernel.org/stable/c/11d35b11013442576f35fd9e8a8fc16155101906
- https://git.kernel.org/stable/c/64af43033503458c46023e56d6ae7bb0f824b55f
- https://git.kernel.org/stable/c/8fde939b0206afc1d5846217a01a16b9bc8c7896
- https://git.kernel.org/stable/c/bae53b3baf2ff2f45f9205c438818fc055601a54