BaseFortify

Publication date: 2026-01-13

Last updated on: 2026-01-19

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg() rlen value is a user-controlled value, but dtv5100_i2c_msg() does not check the size of the rlen value. Therefore, if it is set to a value larger than sizeof(st->data), an out-of-bounds vuln occurs for st->data. Therefore, we need to add proper range checking to prevent this vuln.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-01-13

Last Modified

2026-01-19

Generated

2026-07-06

AI Q&A

2026-01-14

EPSS Evaluated

2026-07-05

NVD

CVE-2025-68819

Affected Vendors & Products

Vendor	Product	Version / Range
linux_kernel	dvb-usb	-

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability occurs in the Linux kernel's media dvb-usb dtv5100 driver, specifically in the dtv5100_i2c_msg() function. The issue is that the rlen value, which is controlled by the user, is not properly checked for size limits. If rlen is set larger than the size of the data buffer (st->data), it causes an out-of-bounds memory access, which is a security flaw.

Impact Analysis

The vulnerability can lead to out-of-bounds memory access, which may cause system instability, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges on the affected system.

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