mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-06 00:39:48 +00:00
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(). Link: https://lore.kernel.org/r/20211020211417.88754-5-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
parent
7a1dda9436
commit
79b20becce
1 changed files with 1 additions and 0 deletions
|
@ -4372,6 +4372,7 @@ lpfc_mbx_cmpl_fc_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
|
|||
ndlp->nlp_state);
|
||||
|
||||
ndlp->nlp_flag |= NLP_RPI_REGISTERED;
|
||||
ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
|
||||
ndlp->nlp_type |= NLP_FABRIC;
|
||||
lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE);
|
||||
|
||||
|
|
Loading…
Reference in a new issue