CVE-2022-48656 dmaengine: ti: k3-udma-private: Fix refcount leak bug in of_xudma_dev_get()

What is CVE-2022-48656?

CVE-2022-48656 is a medium-severity memory corruption vulnerability in Linux kernel, published on 28 Apr 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:

dmaengine: ti: k3-udma-private: Fix refcount leak bug in of_xudma_dev_get()

We should call of_node_put() for the reference returned by of_parse_phandle() in fail path or when it is not used anymore. Here we only need to move the of_node_put() before the check.

Weakness: CWE-401

Which versions are affected by CVE-2022-48656?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-48656?

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-2022-48656 being exploited?

There is no known exploitation of CVE-2022-48656 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 DEBIAN-CVE-2022-48656, GHSA-63qj-jw27-q4x8, UBUNTU-CVE-2022-48656.