high
7.3
CWE
416 264
Advisory Published
Updated

CVE-2016-3841: Use After Free

First published: Sat Aug 06 2016(Updated: )

It was found that the Linux kernel's IPv6 implementation mishandles socket option data. A local attacker can abuse concurrent access to the socket options to escalate their privileges, or cause a denial of service (use-after-free and system crash) via a crafted sendmsg system call. Upstream patch: <a href="https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39">https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39</a>

Credit: security@android.com security@android.com security@android.com

Affected SoftwareAffected VersionHow to fix
Google Android=6.0.1
Linux Linux kernel<=4.3.2
Linux Linux kernel<3.2.75
Linux Linux kernel>=3.3<3.12.52
Linux Linux kernel>=3.13<3.16.35
Linux Linux kernel>=3.17<3.18.25
Linux Linux kernel>=3.19<4.1.15
Linux Linux kernel>=4.2<4.2.8
Linux Linux kernel>=4.3<4.3.3
=6.0.1
<3.2.75
>=3.3<3.12.52
>=3.13<3.16.35
>=3.17<3.18.25
>=3.19<4.1.15
>=4.2<4.2.8
>=4.3<4.3.3
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

Remedy

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45f6fad84cc305103b28d73482b344d7f5b76f39

Remedy

https://github.com/torvalds/linux/commit/45f6fad84cc305103b28d73482b344d7f5b76f39

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Reference Links

Frequently Asked Questions

  • What is CVE-2016-3841?

    CVE-2016-3841 is a vulnerability in the IPv6 stack in the Linux kernel before version 4.3.3.

  • How does CVE-2016-3841 affect users?

    CVE-2016-3841 allows local users to gain privileges or cause a denial of service through a crafted sendmsg system call.

  • What is the severity of CVE-2016-3841?

    CVE-2016-3841 has a severity level of high.

  • How can I fix CVE-2016-3841?

    To fix CVE-2016-3841, update the Linux kernel to version 4.3.3 or higher.

  • Where can I find more information about CVE-2016-3841?

    You can find more information about CVE-2016-3841 at the following references: [link1], [link2], [link3].

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