CVE-2024-49891 scsi: lpfc: Validate hdwq pointers before dereferencing in reset/errata paths

What is CVE-2024-49891?

CVE-2024-49891 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:

scsi: lpfc: Validate hdwq pointers before dereferencing in reset/errata paths

When the HBA is undergoing a reset or is handling an errata event, NULL ptr dereference crashes may occur in routines such as lpfc_sli_flush_io_rings(), lpfc_dev_loss_tmo_callbk(), or lpfc_abort_handler().

Add NULL ptr checks before dereferencing hdwq pointers that may have been freed due to operations colliding with a reset or errata event handler.

Weakness: CWE-476

Which versions are affected by CVE-2024-49891?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-49891?

Apply the vendor's patch.

Is CVE-2024-49891 being exploited?

There is no known exploitation of CVE-2024-49891 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 AZL-51391, AZL-51518, BELL-CVE-2024-49891, DEBIAN-CVE-2024-49891, GHSA-q8m3-vwhc-qqmc, ROOT-OS-DEBIAN-11-CVE-2024-49891 and 2 more.