high
7.8
CWE
119 787 131 120
Advisory Published
CVE Published
Updated

CVE-2022-4378: Buffer Overflow

First published: Mon Dec 12 2022(Updated: )

A flaw stack overflow in the Linux Kernel found. If user have access to SYSCTL (dynamically changing certain kernel parameters and variables), then can provide incorrect input to the function do_proc_dointvec leading to system crash or potentially privileges escalation. Known example of such incorrect input by local user for the /proc/sys/net/ipv4/tcp_rmem , but it could be other situations when this function being used. References: <a href="https://seclists.org/oss-sec/2022/q4/178">https://seclists.org/oss-sec/2022/q4/178</a> <a href="https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch">https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch</a> <a href="https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch">https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch</a>

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<6.0.12
6.0.12
Linux Kernel>=4.9.0<=4.9.337
Linux Kernel>=4.14.0<=4.14.302
Linux Kernel>=4.19.0<=4.19.269
Linux Kernel>=5.4.0<=5.4.228
Linux Kernel>=5.10.0<=5.10.162
Linux Kernel>=5.15.0<=5.15.86
Linux Kernel>=6.0.0<=6.0.11
IBM InfoSphere Guardium z/OS<=11.3
IBM InfoSphere Guardium z/OS<=11.4
IBM InfoSphere Guardium z/OS<=11.5
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.13-1

Remedy

https://git.kernel.org/linus/32927393dc1ccd60fb2bdc05b9e8e88753761469

Remedy

https://git.kernel.org/linus/bce9332220bd677d83b19d21502776ad555a0e73

Remedy

https://git.kernel.org/linus/e6cfaf34be9fcd1a8285a294e18986bfc41a409c

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2022-4378?

    CVE-2022-4378 is a high-severity stack overflow vulnerability in the Linux Kernel that can lead to system crashes and privilege escalation.

  • How do I fix CVE-2022-4378?

    To mitigate CVE-2022-4378, update to a patched version of the Linux Kernel, such as 6.0.12 or corresponding fixed versions in affected distributions.

  • What versions are affected by CVE-2022-4378?

    CVE-2022-4378 affects multiple versions of the Linux Kernel from 4.9.0 to 6.0.11.

  • Can CVE-2022-4378 be exploited remotely?

    Exploitation of CVE-2022-4378 requires local access to the system, as it involves interacting with SYSCTL.

  • What are the potential impacts of CVE-2022-4378?

    The potential impacts of CVE-2022-4378 include system crashes and the possibility of privilege escalation for users with access to SYSCTL.

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