medium
5.5
CWE
476
Advisory Published
CVE Published
Updated

CVE-2023-2166: Null Pointer Dereference

First published: Tue Apr 18 2023(Updated: )

A null pointer dereference issue was found in can protocol in net/can/af_can.c in the Linux before Linux. ml_priv may not be initialized in the receive path of CAN frames. A local user could use this flaw to crash the system or potentially cause a denial of service.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<6.1
6.1
Linux Kernel<6.1
Linux Kernel=6.1
Linux Kernel=6.1-rc1
Linux Kernel=6.1-rc2
Linux Kernel=6.1-rc3
Linux Kernel=6.1-rc4
Linux Kernel=6.1-rc5
Linux Kernel=6.1-rc6
Linux Kernel=6.1-rc7
Linux Kernel=6.1-rc8
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager<=ISVG 10.0.2

Remedy

https://lore.kernel.org/lkml/CAO4mrfcV_07hbj8NUuZrA8FH-kaRsrFy-2metecpTuE5kKHn5w@mail.gmail.com/

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-2166?

    CVE-2023-2166 has a medium severity rating due to its potential to crash the system or cause a denial of service.

  • How do I fix CVE-2023-2166?

    To fix CVE-2023-2166, update the Linux kernel to version 6.1 or later.

  • Who is affected by CVE-2023-2166?

    CVE-2023-2166 affects users running Linux kernel versions prior to 6.1, as well as certain versions of IBM Security Verify Governance software.

  • What causes the vulnerability in CVE-2023-2166?

    CVE-2023-2166 is caused by a null pointer dereference in the CAN protocol implementation in the Linux kernel.

  • Can CVE-2023-2166 be exploited remotely?

    CVE-2023-2166 requires local access to exploit, as it involves a flaw in the kernel's CAN frame processing.

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