CVE-2023-52766 i3c: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler

What is CVE-2023-52766?

CVE-2023-52766 is a high-severity memory corruption 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: mipi-i3c-hci: Fix out of bounds access in hci_dma_irq_handler

Do not loop over ring headers in hci_dma_irq_handler() that are not allocated and enabled in hci_dma_init(). Otherwise out of bounds access will occur from rings->headers[i] access when i >= number of allocated ring headers.

Weakness: CWE-125

Which versions are affected by CVE-2023-52766?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-52766?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-52766 being exploited?

There is no known exploitation of CVE-2023-52766 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-2023-52766, DEBIAN-CVE-2023-52766, GHSA-h7cv-m349-g3xp, ROOT-OS-DEBIAN-11-CVE-2023-52766, UBUNTU-CVE-2023-52766.