Bug 2535240 (CVE-2026-89878) - CVE-2026-89878 kernel: media: s2255: check firmware size before reading trailing marker
Summary: CVE-2026-89878 kernel: media: s2255: check firmware size before reading trail...
Keywords:
Status: NEW
Alias: CVE-2026-89878
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: 2026-09-16 11:38 UTC by OSIDB Bzimport
Modified: 2026-11-01 04:51 UTC (History)
17 users (show)

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


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Description OSIDB Bzimport 2026-09-16 11:38:49 UTC
In the Linux kernel, the following vulnerability has been resolved:

media: s2255: check firmware size before reading trailing marker

s2255_probe() reads a 4-byte marker and version from the last 8 bytes
of the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the
firmware file is shorter than 8 bytes, fw_size - 8 underflows and the
access reads out of bounds. Validate the firmware size before indexing.


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