CWE
667
Advisory Published
Updated

CVE-2023-21400

First published: Wed Jul 12 2023(Updated: )

In multiple functions of io_uring.c, there is a possible kernel memory corruption due to improper locking. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation.

Credit: security@android.com security@android.com security@android.com

Affected SoftwareAffected VersionHow to fix
Google Android
Debian Debian Linux=10.0
Debian Debian Linux=11.0
ubuntu/linux<5.15.0-82.91
5.15.0-82.91
ubuntu/linux-aws<5.15.0-1043.48
5.15.0-1043.48
ubuntu/linux-aws-5.15<5.15.0-1043.48~20.04.1
5.15.0-1043.48~20.04.1
ubuntu/linux-azure<5.15.0-1045.52
5.15.0-1045.52
ubuntu/linux-azure-5.15<5.15.0-1045.52~20.04.1
5.15.0-1045.52~20.04.1
ubuntu/linux-azure-fde<5.15.0-1045.52.1
5.15.0-1045.52.1
ubuntu/linux-azure-fde-5.15<5.15.0-1046.53~20.04.1.1
5.15.0-1046.53~20.04.1.1
ubuntu/linux-gcp<5.15.0-1040.48
5.15.0-1040.48
ubuntu/linux-gcp-5.15<5.15.0-1040.48~20.04.1
5.15.0-1040.48~20.04.1
ubuntu/linux-gke<5.15.0-1040.45
5.15.0-1040.45
ubuntu/linux-gkeop<5.15.0-1026.31
5.15.0-1026.31
ubuntu/linux-gkeop-5.15<5.15.0-1026.31~20.04.1
5.15.0-1026.31~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-82.91~20.04.1
5.15.0-82.91~20.04.1
ubuntu/linux-ibm<5.15.0-1036.39
5.15.0-1036.39
ubuntu/linux-intel-iotg<5.15.0-1038.43
5.15.0-1038.43
ubuntu/linux-intel-iotg-5.15<5.15.0-1038.43~20.04.1
5.15.0-1038.43~20.04.1
ubuntu/linux-kvm<5.15.0-1040.45
5.15.0-1040.45
ubuntu/linux-lowlatency<5.15.0-82.91
5.15.0-82.91
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-82.91~20.04.1
5.15.0-82.91~20.04.1
ubuntu/linux-nvidia<5.15.0-1031.31
5.15.0-1031.31
ubuntu/linux-oracle<5.15.0-1041.47
5.15.0-1041.47
ubuntu/linux-oracle-5.15<5.15.0-1041.47~20.04.1
5.15.0-1041.47~20.04.1
ubuntu/linux-raspi<5.15.0-1036.39
5.15.0-1036.39
ubuntu/linux-riscv-5.15<5.15.0-1039.43~20.04.2
5.15.0-1039.43~20.04.2
ubuntu/linux-xilinx-zynqmp<5.15.0-1025.29
5.15.0-1025.29
debian/linux
5.10.218-1
6.1.94-1
6.1.90-1
6.9.8-1
6.9.9-1

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-21400?

    CVE-2023-21400 is a vulnerability in multiple functions of io_uring.c that could lead to local escalation of privilege in the kernel.

  • What is the severity of CVE-2023-21400?

    The severity of CVE-2023-21400 is medium with a CVSS score of 6.7.

  • How can CVE-2023-21400 be exploited?

    CVE-2023-21400 can be exploited without user interaction.

  • Which software versions are affected by CVE-2023-21400?

    The affected software versions include Linux versions 5.18.2-1, 5.15.0-82.91, and others.

  • Where can I find more information about CVE-2023-21400?

    You can find more information about CVE-2023-21400 on the official Google Android security bulletin and openwall.com.

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