CVE-2023-1195: Use After Free

Published Oct 2, 2022
·
Updated

A use-after-free flaw was found in reconnsetipaddrfromhostname in fs/cifs/connect.c in the Linux kernel. The issue occurs when it forgets to set the free pointer server->hostname to NULL, leading to an invalid pointer request.

Other sources

A use-after-free in reconnsetipaddrfromhostname forgets to set free pointer server->hostname to NULL. Upstream fix: https://github.com/torvalds/linux/commit/153695d36ead0ccc4d0256953c751cabf673e621

— Red Hat

Affected Software

9 affected componentsFixes available
redhat/kernel-rt<0:4.18.0-477.10.1.rt7.274.el8_8
0:4.18.0-477.10.1.rt7.274.el8_8
redhat/kernel<0:4.18.0-477.10.1.el8_8
0:4.18.0-477.10.1.el8_8
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
Linux Linux kernel<6.1
Linux Linux kernel=6.1-rc1
Linux Linux kernel=6.1-rc2
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.25-16.12.27-1
redhat/kernel<6.1
6.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-477.10.1.rt7.274.el8_8
  2. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-477.10.1.el8_8
  3. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:5.14.0-284.11.1.el9_2
  4. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:5.14.0-284.11.1.rt14.296.el9_2
  5. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1
  6. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 6.1

Event History

Oct 2, 2022
CVE Published
06:30 AM
Dec 16, 2022
Data Sourced
via Red Hat·05:32 AM
DescriptionSeverityAffected Software
May 18, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Jan 12, 2024
Data Sourced
via Launchpad·12:13 AM
Description
Apr 28, 2025
Data Sourced
via Ubuntu·04:49 AM
RemedyDescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2023-1195?

CVE-2023-1195 has been classified with a severity rating that indicates a use-after-free vulnerability, which can lead to potential denial of service or arbitrary code execution.

2

How do I fix CVE-2023-1195?

To fix CVE-2023-1195, upgrade to the latest kernel versions specified for your distribution, such as kernel-rt 0:4.18.0-477.10.1.rt7.274.el8_8 or kernel 0:5.14.0-284.11.1.el9_2.

3

What are the affected systems for CVE-2023-1195?

CVE-2023-1195 affects several versions of the Linux kernel, including multiple Red Hat and Debian packages.

4

Can CVE-2023-1195 lead to system compromise?

Yes, CVE-2023-1195 can potentially allow attackers to exploit the use-after-free flaw, leading to system compromise.

5

Is CVE-2023-1195 specific to certain Linux distributions?

CVE-2023-1195 is not limited to a single distribution and affects multiple Linux distributions, including Red Hat and Debian.

Company

Resources

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