CVE-2026-89842

Summary

In the Linux kernel, the following vulnerability has been resolved:

scsi: qla2xxx: Skip NVMe LS reject IOCB when FW not started

qla_nvme_xmt_ls_rsp() bails out to the out: label when firmware is not started (!ha->flags.fw_started), but the out: path unconditionally calls qla_nvme_ls_reject_iocb(), which ends in qla2x00_start_iocbs() and an unconditional doorbell write to the request queue in-pointer register. This rings the firmware doorbell and queues an IOCB that stopped or resetting firmware cannot consume, and touches MMIO during the reset/EEH window where fw_started is also clear.

Only emit the LS reject IOCB (and ring the doorbell) when fw_started is set; otherwise just clean up and return. The post-allocation failure cases (SRB alloc / qla2x00_start_sp() failure) run with firmware started and still send the reject. Apply the same guard to the reject emission in qla2xxx_process_purls_pkt().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < 2935b730211c5c1433aa6101fa3b55df2b63869aaffected
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < 7c1fc75dd3fb6b6414508fbdf7aeed0d757c9120affected
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < ac4b019ac07844d3f67ea5e48b1d982b2170d1a7affected
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < e9bfb56e2c1bda49d3c5442d824569d71eec07e2affected
LinuxLinux875386b98857822b77ac7f95bdf367b70af5b78c < f7e46ebffc5781aab3f1f5a5d4350addbb5833f4affected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.5 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References