Bug 2521407 (CVE-2026-74693) - CVE-2026-74693 kernel: net: prestera: validate firmware header length
Summary: CVE-2026-74693 kernel: net: prestera: validate firmware header length
Keywords:
Status: NEW
Alias: CVE-2026-74693
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-22 15:44 UTC by OSIDB Bzimport
Modified: 2026-08-24 11:57 UTC (History)
2 users (show)

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

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-08-22 15:44:05 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: prestera: validate firmware header length

prestera_fw_hdr_parse() reads the firmware header before checking
that the firmware image contains that header.

Reject images shorter than struct prestera_fw_header before decoding the
magic and version fields.
Comment 1 Mauro Matteo Cascella 2026-08-24 11:55:14 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026082234-CVE-2026-74693-ba3f@gregkh/T
Note You need to log in before you can comment on or make changes to this bug.