CVE-2026-43413

/// Technical description

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

scsi: hisi_sas: Fix NULL pointer exception during user_scan()

user_scan() invokes updated sas_user_scan() for channel 0, and if

successful, iteratively scans remaining channels (1 to shost->max_channel)

via scsi_scan_host_selected() in commit 37c4e72b0651 ("scsi: Fix

sas_user_scan() to handle wildcard and multi-channel scans"). However,

hisi_sas supports only one channel, and the current value of max_channel is

1. sas_user_scan() for channel 1 will trigger the following NULL pointer

exception:

[ 441.554662] Unable to handle kernel NULL pointer dereference at virtual address 00000000000008b0

[ 441.554699] Mem abort info:

[ 441.554710] ESR = 0x0000000096000004

[ 441.554718] EC = 0x25: DABT (current EL), IL = 32 bits

[ 441.554723] SET = 0, FnV = 0

[ 441.554726] EA = 0, S1PTW = 0

[ 441.554730] FSC = 0x04: level 0 translation fault

[ 441.554735] Data abort info:

[ 441.554737] ISV = 0, ISS = 0x0000000

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References