CWE
476
Advisory Published
CVE Published
Updated

CVE-2015-6937: Null Pointer Dereference

First published: Tue Sep 15 2015(Updated: )

It was found that the Linux kernel's Reliable Datagram Sockets (RDS) protocol implementation did not verify that an underlying transport exists when creating a connection to a remote server. This could happen on sockets that were not properly bound before attempting to send a message. A local attacker could use this flaw to crash the system by creating sockets at specific times to trigger a NULL pointer dereference on the system. Upstream patch: <a href="https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=74e98eb085889b0d2d4908f59f6e00026063014f">https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=74e98eb085889b0d2d4908f59f6e00026063014f</a> CVE assignment: <a href="http://seclists.org/oss-sec/2015/q3/545">http://seclists.org/oss-sec/2015/q3/545</a>

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<=4.2.3
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Debian Debian Linux=7.0
Debian Debian Linux=8.0
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.11.10-1
6.12.5-1

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2015-6937.

  • What is the severity of CVE-2015-6937?

    CVE-2015-6937 has a medium severity rating.

  • How does CVE-2015-6937 impact the Linux kernel?

    CVE-2015-6937 allows local users to cause a denial of service or possibly have other unspecified impact by using a socket that was not properly bound.

  • Which software versions are affected by CVE-2015-6937?

    The Linux kernel versions through 4.2.3 are affected.

  • How can I fix CVE-2015-6937?

    Update your Linux kernel to version 4.3 or higher.

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