CVE-2021-47045

scsi: lpfc: Fix null pointer dereference in lpfc_prep_els_iocb()

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix null pointer dereference in lpfc_prep_els_iocb() It is possible to call lpfc_issue_els_plogi() passing a did for which no matching ndlp is found. A call is then made to lpfc_prep_els_iocb() with a null pointer to a lpfc_nodelist structure resulting in a null pointer dereference. Fix by returning an error status if no valid ndlp is found. Fix up comments regarding ndlp reference counting.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/a09677de458d500b00701f6036baa423d9995408 patch
https://git.kernel.org/stable/c/9bdcfbed2a9fe24d2c7eaa1bad7c705e18de8cc7 patch
https://git.kernel.org/stable/c/8dd1c125f7f838abad009b64bff5f0a11afe3cb6 patch

Frequently Asked Questions

What is the severity of CVE-2021-47045?
CVE-2021-47045 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47045?
To fix CVE-2021-47045, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47045 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47045 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47045?
CVE-2021-47045 affects Linux Linux, Linux Linux.
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