medium
5.5
CWE
476
Advisory Published
CVE Published
Updated

CVE-2023-1382: Null Pointer Dereference

First published: Fri Nov 18 2022(Updated: )

A data race flaw was found in the Linux kernel, between where con is allocated and con->sock is set. This issue leads to a NULL pointer dereference when accessing con->sock->sk in net/tipc/topsrv.c in the tipc protocol in the Linux kernel.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<0:5.14.0-284.11.1.el9_2
0:5.14.0-284.11.1.el9_2
redhat/kernel-rt<0:5.14.0-284.11.1.rt14.296.el9_2
0:5.14.0-284.11.1.rt14.296.el9_2
redhat/Kernel<6.1
6.1
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager<=ISVG 10.0.2
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
debian/linux
5.10.223-1
5.10.234-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.16-1

Remedy

This flaw can be mitigated by preventing the affected transparent inter-process communication (TIPC) protocol kernel module from loading during the boot time. Ensure the module is added into the blacklist file. ~~~ Refer: How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~

Remedy

https://lore.kernel.org/netdev/bc7bd3183f1c275c820690fc65b708238fe9e38e.1668807842.git.lucien.xin@gmail.com/T/#u

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-1382?

    CVE-2023-1382 has been classified as a medium severity vulnerability.

  • How do I fix CVE-2023-1382?

    To mitigate CVE-2023-1382, upgrade to kernel version 0:5.14.0-284.11.1.el9_2 or apply other specified patches.

  • Which systems are affected by CVE-2023-1382?

    CVE-2023-1382 affects various Linux kernel versions including 5.14 and 6.1, as well as specific IBM Security products.

  • What type of vulnerability is CVE-2023-1382?

    CVE-2023-1382 is a data race flaw in the Linux kernel affecting the tipc protocol.

  • What is the impact of CVE-2023-1382?

    The impact of CVE-2023-1382 is a potential NULL pointer dereference that could lead to system instability.

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