CVE-2021-47045

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4430f7fd09ecb037570119e0aacbf0c17b8f98b2 < a09677de458d500b00701f6036baa423d9995408affected
LinuxLinux4430f7fd09ecb037570119e0aacbf0c17b8f98b2 < 9bdcfbed2a9fe24d2c7eaa1bad7c705e18de8cc7affected
LinuxLinux4430f7fd09ecb037570119e0aacbf0c17b8f98b2 < 8dd1c125f7f838abad009b64bff5f0a11afe3cb6affected
LinuxLinux5.11affected
LinuxLinux0 < 5.11unaffected
LinuxLinux5.11.21 <= 5.11.*unaffected
LinuxLinux5.12.4 <= 5.12.*unaffected
LinuxLinux5.13 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References