From: Shreyas Deodhar <sdeodhar@marvell.com> stable inclusion from stable-v4.19.291 commit a69125a3ce88d9a386872034e7664b30cc4bcbed category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/ICY47X CVE: CVE-2023-53150 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- commit 00eca15319d9ce8c31cdf22f32a3467775423df4 upstream. Klocwork tool reported pointer 'rport' returned from call to function fc_bsg_to_rport() may be NULL and will be dereferenced. Add a fix to validate rport before dereferencing. Cc: stable@vger.kernel.org Signed-off-by: Shreyas Deodhar <sdeodhar@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Link: https://lore.kernel.org/r/20230607113843.37185-7-njavali@marvell.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Chen Jinghuang <chenjinghuang2@huawei.com> --- drivers/scsi/qla2xxx/qla_bsg.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c index 5a56b8af8d2b..27a7d5f90633 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.c +++ b/drivers/scsi/qla2xxx/qla_bsg.c @@ -2483,6 +2483,8 @@ qla24xx_bsg_request(struct bsg_job *bsg_job) if (bsg_request->msgcode == FC_BSG_RPT_ELS) { rport = fc_bsg_to_rport(bsg_job); + if (!rport) + return ret; host = rport_to_shost(rport); vha = shost_priv(host); } else { -- 2.34.1