media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/4a54d8fcb093761e4c56eb211cf4e39bf8401fa1
- https://git.kernel.org/stable/c/61f214a878e96e2a8750bf96a98f78c658dba60c
- https://git.kernel.org/stable/c/ac92151ff2494130d9fc686055d6bbb9743a673e
- https://git.kernel.org/stable/c/b91e6aafe8d356086cc621bc03e35ba2299e4788
- https://git.kernel.org/stable/c/c2305b4c5fc15e20ac06c35738e0578eb4323750
- https://git.kernel.org/stable/c/c2c293ea7b61f12cdaad1e99a5b4efc58c88960a
- https://git.kernel.org/stable/c/fe3e129ab49806aaaa3f22067ebc75c2dfbe4658
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68819.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-68819