CVE-2026-89844

/// Technical description

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

scsi: qla2xxx: Hold vport_slock for host map update in report ID acquisition

qla24xx_report_id_acquisition() format-1 handling drops vport_slock after

taking the vport reference and then calls qla_update_host_map() without

the lock. That reaches qla_update_vp_map(), which mutates the ha->host_map

btree via btree_insert32()/btree_update32()/btree_remove32() and is

documented to require vport_slock to be held by the caller. Running it

unlocked can race concurrent host_map updates and corrupt the btree.

The format-2 path in the same function already wraps its host_map update

(SET_AL_PA) in vport_slock; the format-1 path is the lone outlier.

Hold vport_slock across the format-1 qla_update_host_map() call to honor

the documented locking contract. The vref_count taken in the loop keeps

the vport valid, so this only adds the missing host_map serialization.

/// 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