Bug 2535374 (CVE-2026-89859) - CVE-2026-89859 kernel: scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak
Summary: CVE-2026-89859 kernel: scsi: qla2xxx: Zero dport diagnostics buffer to avoid ...
Keywords:
Status: NEW
Alias: CVE-2026-89859
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-16 12:24 UTC by OSIDB Bzimport
Modified: 2026-11-04 15:18 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description OSIDB Bzimport 2026-09-16 12:24:02 UTC
In the Linux kernel, the following vulnerability has been resolved:

scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak

qla2x00_do_dport_diagnostics() allocates the qla_dport_diag response
buffer with kmalloc_obj() (non-zeroing) and, on success, copies the full
sizeof(*dd) back to user space via sg_copy_from_buffer(). The inbound
sg_copy_to_buffer() only fills as many bytes as the user request payload
provides, and qla26xx_dport_diagnostics() zeroes only dd->buf. The
options and unused[] fields are therefore copied out uninitialized,
leaking kernel heap contents to user space.

Allocate with kzalloc_obj(), matching qla2x00_do_dport_diagnostics_v2().


Note You need to log in before you can comment on or make changes to this bug.