CWE
416 476 362
Advisory Published
CVE Published
Updated

CVE-2023-0468: Use After Free

First published: Tue Jan 24 2023(Updated: )

A use-after-free flaw was found in io_uring/poll.c in io_poll_check_events in the io_uring subcomponent in the Linux Kernel due to a race condition of poll_refs. This flaw may cause a NULL pointer dereference.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/Kernel<6.1
6.1
Linux Kernel<6.1
Linux Kernel=6.1
Linux Kernel=6.1-rc1
Linux Kernel=6.1-rc2
Linux Kernel=6.1-rc3
Linux Kernel=6.1-rc4
Linux Kernel=6.1-rc5
Linux Kernel=6.1-rc6
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.119-1
6.12.11-1
6.12.12-1

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Frequently Asked Questions

  • What is the severity of CVE-2023-0468?

    CVE-2023-0468 is considered a high severity vulnerability due to the potential for NULL pointer dereference.

  • How do I fix CVE-2023-0468?

    To fix CVE-2023-0468, update to Linux Kernel version 6.1 or apply the relevant patches from your distribution.

  • What systems are affected by CVE-2023-0468?

    CVE-2023-0468 affects Linux Kernel versions up to 6.1, including several release candidates.

  • What causes the vulnerability CVE-2023-0468?

    CVE-2023-0468 is caused by a use-after-free flaw due to a race condition in the io_uring/poll.c component.

  • Is CVE-2023-0468 being actively exploited?

    As of now, there is no confirmation of active exploitation of CVE-2023-0468, but it is advisable to apply patches promptly.

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