medium
5.5
CWE
476
EPSS
0.045%
Advisory Published
Updated

CVE-2024-35790: usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group

First published: Fri May 17 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: create sysfs nodes as driver's default device attribute group The DisplayPort driver's sysfs nodes may be present to the userspace before typec_altmode_set_drvdata() completes in dp_altmode_probe. This means that a sysfs read can trigger a NULL pointer error by deferencing dp->hpd in hpd_show or dp->lock in pin_assignment_show, as dev_get_drvdata() returns NULL in those cases. Remove manual sysfs node creation in favor of adding attribute group as default for devices bound to the driver. The ATTRIBUTE_GROUPS() macro is not used here otherwise the path to the sysfs nodes is no longer compliant with the ABI.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
redhat/kernel<6.6.24
6.6.24
redhat/kernel<6.7.12
6.7.12
redhat/kernel<6.8
6.8
Linux Kernel>=4.19<6.6.24
Linux Kernel>=6.7<6.7.12
Linux Kernel=6.8-rc1
Linux Kernel=6.8-rc2
Linux Kernel=6.8-rc3
Linux Kernel=6.8-rc4
Linux Kernel=6.8-rc5
Linux Kernel=6.8-rc6
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager Software Stack<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager Virtual Appliance<=ISVG 10.0.2
IBM Security Verify Governance Identity Manager Container<=ISVG 10.0.2

Remedy

https://git.kernel.org/stable/c/0ad011776c057ce881b7fd6d8c79ecd459c087e9

Remedy

https://git.kernel.org/stable/c/165376f6b23e9a779850e750fb2eb06622e5a531

Remedy

https://git.kernel.org/stable/c/4a22aeac24d0d5f26ba741408e8b5a4be6dc5dc0

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2024-35790?

    CVE-2024-35790 has a severity rating that necessitates attention due to the potential impact on the Linux kernel's handling of sysfs nodes.

  • How do I fix CVE-2024-35790?

    To fix CVE-2024-35790, upgrade the Linux kernel to version 6.6.24, 6.7.12, or 6.8 as appropriate for your system.

  • What versions of the Linux kernel are affected by CVE-2024-35790?

    CVE-2024-35790 affects Linux kernel versions from 4.19 up to but not including 6.6.24, and 6.7.0 to 6.7.12.

  • Is there a workaround for CVE-2024-35790?

    There are no documented workarounds for CVE-2024-35790; applying the provided updates is the recommended course of action.

  • Which products may be impacted by CVE-2024-35790?

    CVE-2024-35790 may impact products including IBM Security Verify Governance and associated components.

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