Use-after-free error in Linux kernel - CVE-2017-7487

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Main Vulnerability Database Vulnerabilities #VU7255

Use-after-free error in Linux kernel - CVE-2017-7487

Published: June 29, 2017 / Updated: July 3, 2017


Vulnerability identifier: #VU7255
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-7487
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists due to use-after-free error the ipxitf_ioctl function in net/ipx/af_ipx.c. A local attacker can use a failed SIOCGIFADDR ioctl call for an IPX interface to trigger memory corruption and cause the system to crash.

Successful exploitation of the vulnerability results in denial of service.

Affected software

Linux kernel
SUSE Linux
Ubuntu
Fedora
kernel

How to mitigate CVE-2017-7487

Update to version 4.11.2.

kernel - addressed in versions 4.10.16-100.fc24, 4.10.16-200.fc25

External References

Related Security Bulletins