CVE-2022-49757 EDAC/highbank: Fix memory leak in highbank_mc_probe()

What is CVE-2022-49757?

CVE-2022-49757 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 Mar 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:

EDAC/highbank: Fix memory leak in highbank_mc_probe()

When devres_open_group() fails, it returns -ENOMEM without freeing memory allocated by edac_mc_alloc().

Call edac_mc_free() on the error handling path to avoid a memory leak.

[ bp: Massage commit message. ]

Weakness: CWE-401

Which versions are affected by CVE-2022-49757?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49757?

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-2022-49757 being exploited?

There is no known exploitation of CVE-2022-49757 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-2022-49757, GHSA-xvxr-rrxw-rfp9, UBUNTU-CVE-2022-49757.