CVE-2024-43821 scsi: lpfc: Fix a possible null pointer dereference

What is CVE-2024-43821?

CVE-2024-43821 is a medium-severity vulnerability in Linux kernel, published on 17 Aug 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:

scsi: lpfc: Fix a possible null pointer dereference

In function lpfc_xcvr_data_show, the memory allocation with kmalloc might fail, thereby making rdp_context a null pointer. In the following context and functions that use this pointer, there are dereferencing operations, leading to null pointer dereference.

To fix this issue, a null pointer check should be added. If it is null, use scnprintf to notify the user and return len.

Weakness: CWE-476

Which versions are affected by CVE-2024-43821?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-43821?

Apply the vendor's patch.

Is CVE-2024-43821 being exploited?

There is no known exploitation of CVE-2024-43821 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-2024-43821, DEBIAN-CVE-2024-43821, GHSA-h4rw-35j2-46pq, UBUNTU-CVE-2024-43821.