Advisory Published
Updated

CVE-2023-40791

First published: Mon Oct 16 2023(Updated: )

extract_user_to_sg in lib/scatterlist.c in the Linux kernel before 6.4.12 fails to unpin pages in a certain situation, as demonstrated by a WARNING for try_grab_page.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<6.4.12
All of
Netapp H300s Firmware
Netapp H300s
All of
Netapp H500s Firmware
Netapp H500s
All of
Netapp H700s Firmware
Netapp H700s
All of
Netapp H410s Firmware
Netapp H410s

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Frequently Asked Questions

  • What is CVE-2023-40791?

    CVE-2023-40791 is a vulnerability in the Linux kernel before version 6.4.12 that can lead to pages not being unpinned in a specific situation.

  • How severe is CVE-2023-40791?

    CVE-2023-40791 has a severity rating of 9.1, which is considered critical.

  • What software is affected by CVE-2023-40791?

    Linux kernel versions before 6.4.12 are affected by CVE-2023-40791.

  • How can I fix CVE-2023-40791?

    To fix CVE-2023-40791, update the Linux kernel to version 6.4.12 or later.

  • Where can I find more information about CVE-2023-40791?

    For more information about CVE-2023-40791, you can refer to the following links: [ChangeLog-6.4.12](https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.12), [Commit Details](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f443fd5af5dbd531f880d3645d5dd36976cf087f), [Kernel Mailing List Discussion](https://lkml.org/lkml/2023/8/3/323).

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