Nm358809 Software Updated Access

One of the silent additions in this update is a fix for a moderate-severity vulnerability (CVSS 6.8) that could allow local privilege escalation through malformed SCSI commands. While not remotely exploitable, updated security posture is vital for multi-tenant servers.

Installing firmware improperly can brick a controller. Follow this procedure precisely.

Systems experiencing hangs when waking from sleep (S3) or hibernate (S4) will see marked improvement. The NM358809 update revises the PCIe link training sequence during power recovery. nm358809 software updated

To determine if you need the NM358809 update, first identify the device and current firmware version:

Not every system requires this update. You should consider applying the NM358809 software updated package if: One of the silent additions in this update

If your system is working flawlessly in a non-critical environment and does not use affected hardware, the update is optional but still recommended for future-proofing.

sudo nvme list
sudo lspci -vvv -s <bus_address> | grep -i "rev"

If the firmware revision matches v3.5.8 or earlier (depending on OEM labeling), the NM358809 update is applicable. If your system is working flawlessly in a

| Problem | Likely Cause | Solution | |---------|--------------|----------| | “Device not compatible” error | Wrong package variant | Double-check hardware ID; download specific OEM version. | | Flashing stalls at 0% | Write-protect latch enabled | Some enterprise controllers have a physical WP switch. Disable it. | | Boot failure after update | Boot order changed in NVRAM | Enter BIOS/UEFI and reset boot priority. | | Performance drop after update | Resettable statistics | Run controller cache flush + reboot again. |

If flashing fails midway, do not restart. Use the vendor’s recovery mode (typically holding a jumper or booting from backup firmware bank). Consult hardware manual.