CVE-2023-52763 i3c: master: mipi-i3c-hci: Fix a kernel panic for accessing DAT_data.

What is CVE-2023-52763?

CVE-2023-52763 is a medium-severity vulnerability in Linux kernel, published on 21 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

i3c: master: mipi-i3c-hci: Fix a kernel panic for accessing DAT_data.

The `i3c_master_bus_init` function may attach the I2C devices before the I3C bus initialization. In this flow, the DAT `alloc_entry`` will be used before the DAT `init`. Additionally, if the `i3c_master_bus_init` fails, the DAT `cleanup` will execute before the device is detached, which will execue DAT `free_entry` function. The above scenario can cause the driver to use DAT_data when it is NULL.

Which versions are affected by CVE-2023-52763?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-52763?

Apply the vendor's patch.

Is CVE-2023-52763 being exploited?

There is no known exploitation of CVE-2023-52763 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2023-52763, DEBIAN-CVE-2023-52763, GHSA-9q5q-4f67-9x48, ROOT-OS-DEBIAN-11-CVE-2023-52763, UBUNTU-CVE-2023-52763.