CVE-2025-68819 Details
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.
A vulnerability allowing out-of-bounds memory access has been identified in the Linux kernel's handling of I2C messages for the DVB-USB DTV5100 device. The issue arises because the 'rlen' value, which is controlled by the user, is not properly validated before being used. If 'rlen' is set to a value greater than the size of the destination buffer, it can lead to memory corruption by overwriting adjacent memory. This vulnerability has been addressed by adding appropriate range checks to ensure the 'rlen' value does not exceed the buffer size.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jan 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/4a54d8fcb093761e4c56eb211cf4e39bf8401fa1 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/61f214a878e96e2a8750bf96a98f78c658dba60c | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/ac92151ff2494130d9fc686055d6bbb9743a673e | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/b91e6aafe8d356086cc621bc03e35ba2299e4788 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/c2305b4c5fc15e20ac06c35738e0578eb4323750 | kernel.org | |
| https://git.kernel.org/stable/c/c2c293ea7b61f12cdaad1e99a5b4efc58c88960a | kernel.org | |
| https://git.kernel.org/stable/c/fe3e129ab49806aaaa3f22067ebc75c2dfbe4658 | kernel.org | Source CodeVendor |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Linux kernel | All versions |
CPE
Remediation
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| Linux kernel | All versions |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 30, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jan 19, 2026 | CVE Modified | kernel.org |
| Jan 13, 2026 | New CVE Received | kernel.org |