CVE-2017-7487 Use after free in Linux kernel through 4.11.1
Local attackers can trigger a use-after-free in the IPX driver via a failed ioctl call, causing denial of service or potential code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7487?
CVE-2017-7487 is a high-severity use after free vulnerability in Debian Debian Linux, published on 14 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The ipxitf_ioctl function in net/ipx/af_ipx.c in the Linux kernel through 4.11.1 mishandles reference counts, which allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a failed SIOCGIFADDR ioctl call for an IPX interface.
Weakness: CWE-416
Which versions are affected by CVE-2017-7487?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2017-7487?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2017-7487 being exploited?
There is no known exploitation of CVE-2017-7487 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-7487, GHSA-qjrv-wmmp-jvg2, UBUNTU-CVE-2017-7487, USN-3404-2.