CVE-2022-49403 lib/string_helpers: fix not adding strarray to device's resource list

What is CVE-2022-49403?

CVE-2022-49403 is a medium-severity denial of service vulnerability in Linux kernel, published on 26 Feb 2025. 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:

lib/string_helpers: fix not adding strarray to device's resource list

Add allocated strarray to device's resource list. This is a must to automatically release strarray when the device disappears.

Without this fix we have a memory leak in the few drivers which use devm_kasprintf_strarray().

Weakness: CWE-401

Which versions are affected by CVE-2022-49403?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49403?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-49403 being exploited?

There is no known exploitation of CVE-2022-49403 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-2022-49403, GHSA-v76p-9ff9-f29g, UBUNTU-CVE-2022-49403.