CVE-2024-35862: smb: client: fix potential UAF in smb2_is_network_name_deleted()

Published May 19, 2024
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

Affected Software

10 affected componentsFixes available
Linux Linux kernel>=5.12<6.1.85
Linux Linux kernel>=6.2<6.6.26
Linux Linux kernel>=6.7<6.8.5
Linux Linux kernel=6.9-rc1
Linux Linux kernel=6.9-rc2
redhat/kernel<6.1.85
6.1.85
redhat/kernel<6.6.26
6.6.26
redhat/kernel<6.8.5
6.8.5
redhat/kernel<6.9
6.9
debian/linux
5.10.223-15.10.257-16.1.170-36.1.174-16.12.86-16.12.90-27.0.10-17.0.12-2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 6.1.85
  2. Upgrade

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

    Fixed in 6.6.26
  3. Upgrade

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

    Fixed in 6.8.5
  4. Upgrade

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

    Fixed in 6.9
  5. Upgrade

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

    Fixed in 5.10.223-1Fixed in 5.10.257-1Fixed in 6.1.170-3Fixed in 6.1.174-1Fixed in 6.12.86-1Fixed in 6.12.90-2Fixed in 7.0.10-1Fixed in 7.0.12-2
  6. Upgrade

    Upgrade linux kernel smb client to a version that resolves this vulnerability.

    Patch CVE-2024-35862
  7. Compensating control

    If you are able to avoid the affected code path while patching, skip SMB client sessions that are being teared down (status == SES_EXITING) so that smb2_is_network_name_deleted() does not operate on sessions in teardown and avoids the potential UAF described for CVE-2024-35862.

Event History

May 19, 2024
CVE Published
via MITRE·08:34 AM
Data Sourced
via MITRE·08:34 AM
DescriptionSeverity
Data Sourced
via NVD·09:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
May 20, 2024
Data Sourced
via Red Hat·01:41 PM
DescriptionSeverityAffected Software
May 21, 2026
Data Sourced
via Launchpad·01:47 PM
Description
Jun 17, 2026
Data Sourced
via Ubuntu·07:43 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Debian·07:45 PM
DescriptionAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2024-35862?

CVE-2024-35862 has a severity rating that indicates a potential risk of unauthorized access due to a use-after-free vulnerability in the Linux kernel.

2

How do I fix CVE-2024-35862?

To fix CVE-2024-35862, upgrade the Kernel to one of the patched versions such as Red Hat kernel 6.1.85 or later.

3

Which versions of the Linux kernel are affected by CVE-2024-35862?

CVE-2024-35862 affects multiple versions of the Linux kernel prior to the patched versions of 6.1.85, 6.6.26, 6.8.5, and 6.9.

4

Is CVE-2024-35862 exploitable remotely?

CVE-2024-35862 could potentially be exploited remotely depending on the system configurations and network access.

5

What are the symptoms of CVE-2024-35862 vulnerability?

The symptoms of CVE-2024-35862 may include system instability or crashes related to the SMB protocol on affected Linux kernel versions.

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