7.8
CWE
416 787
Advisory Published
Updated

CVE-2019-8956: Use After Free

First published: Mon Apr 01 2019(Updated: )

In the Linux Kernel before versions 4.20.8 and 4.19.21 a use-after-free error in the "sctp_sendmsg()" function (net/sctp/socket.c) when handling SCTP_SENDALL flag can be exploited to corrupt memory.

Credit: PSIRT-CNA@flexerasoftware.com PSIRT-CNA@flexerasoftware.com PSIRT-CNA@flexerasoftware.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=4.17<4.19.21
Linux Linux kernel>=4.20<4.20.8
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.12.5-1
6.12.6-1

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Frequently Asked Questions

  • What is CVE-2019-8956?

    CVE-2019-8956 is a vulnerability in the Linux Kernel that allows for a use-after-free error in the "sctp_sendmsg()" function when handling SCTP_SENDALL flag, which can be exploited to corrupt memory.

  • What is the severity of CVE-2019-8956?

    The severity of CVE-2019-8956 is not provided.

  • How can I exploit CVE-2019-8956?

    Details on how to exploit CVE-2019-8956 are not provided.

  • How do I fix CVE-2019-8956?

    To fix CVE-2019-8956, update your Linux Kernel to versions 4.20.8 or 4.19.21.

  • Where can I find more information about CVE-2019-8956?

    You can find more information about CVE-2019-8956 at the following references: [1] [2] [3]

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