CVE-2022-49019 net: ethernet: nixge: fix NULL dereference

What is CVE-2022-49019?

CVE-2022-49019 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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:

net: ethernet: nixge: fix NULL dereference

In function nixge_hw_dma_bd_release() dereference of NULL pointer priv->rx_bd_v is possible for the case of its allocation failure in nixge_hw_dma_bd_init().

Move for() loop with priv->rx_bd_v dereference under the check for its validity.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Weakness: CWE-476

Which versions are affected by CVE-2022-49019?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49019?

Apply the vendor's patch.

Is CVE-2022-49019 being exploited?

There is no known exploitation of CVE-2022-49019 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-2022-49019, GHSA-xxqv-jc35-w8cj, UBUNTU-CVE-2022-49019.