Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-47198

scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine An error is detected with the following report when unloading the driver: "KASAN: use-after-free in lpfc_unreg_rpi+0x1b1b" The NLP_REG_LOGIN_SEND nlp_flag is set in lpfc_reg_fab_ctrl_node(), but the flag is not cleared upon completion of the login. This allows a second call to lpfc_unreg_rpi() to proceed with nlp_rpi set to LPFC_RPI_ALLOW_ERROR. This results in a use after free access when used as an rpi_ids array index. Fix by clearing the NLP_REG_LOGIN_SEND nlp_flag in lpfc_mbx_cmpl_fc_reg_login().

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • fe83e3b9b422ac8ece2359c7b7290efe7f0335a2 to < dbebf865b3239595c1d4dba063b122862583b52aaffected
  • fe83e3b9b422ac8ece2359c7b7290efe7f0335a2 to < 79b20beccea3a3938a8500acef4e6b9d7c66142faffected

Linux Linux

Default version status: affected

  • 5.14affected
  • 0 to < 5.14unaffected
  • 5.15.5 to ≤ 5.15.*unaffected
  • 5.16 to ≤ *unaffected

References