CVE-2023-7192: linux kernel — Fix

Description

A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 6.3
redhat	enterprise_linux	All
redhat	enterprise_linux	All

References

Advisories & Patches

https://bugzilla.redhat.com/show_bug.cgi?id=2256279 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=ac4893980bbe79ce383daf9a0885666a30fe4c83 https://bugzilla.redhat.com/show_bug.cgi?id=2256279 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=ac4893980bbe79ce383daf9a0885666a30fe4c83

Other References

https://access.redhat.com/errata/RHSA-2024:0723 https://access.redhat.com/errata/RHSA-2024:0725 https://access.redhat.com/errata/RHSA-2024:1188 https://access.redhat.com/errata/RHSA-2024:1250 https://access.redhat.com/errata/RHSA-2024:1306 https://access.redhat.com/errata/RHSA-2024:1367 https://access.redhat.com/errata/RHSA-2024:1382 https://access.redhat.com/errata/RHSA-2024:1404 https://access.redhat.com/errata/RHSA-2024:2006 https://access.redhat.com/errata/RHSA-2024:2008

Frequently Asked Questions

What is CVE-2023-7192? +

A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-7192? +

CVE-2023-7192 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-7192? +

CVE-2023-7192 affects products from linux, redhat, specifically: enterprise_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-7192? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-7192