CVE-2025-68819 json
media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()
published 2026-01-13 9 mo ago modified 2026-10-19 20 d ago also EUVD-2026-2277
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 4%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Linux Linux 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.3, 6.19
- linux Debian 12 6.1.162-1
- linux Debian 13 6.12.69-1
- linux Debian 14 6.18.3-1
debian advisories DEBIAN-CVE-2025-68819
- linux Ubuntu 22.04 LTS 5.15.0-173.183
- linux Ubuntu 24.04 LTS 6.8.0-110.110
- linux Ubuntu 25.10 6.17.0-22.22
- linux-aws Ubuntu 22.04 LTS 5.15.0-1103.110
- linux-aws Ubuntu 24.04 LTS 6.8.0-1052.55
- linux-aws Ubuntu 25.10 6.17.0-1012.12
- linux-gcp Ubuntu 22.04 LTS 5.15.0-1103.112
- linux-gcp Ubuntu 24.04 LTS 6.8.0-1054.57
ubuntu advisories UBUNTU-CVE-2025-68819
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-40.1
- kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-40.1
- kernel-rt Linux Micro 6.2 6.12.0-160000.26.1
- kernel-64kb SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.26.1
- kernel-source SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.26.1
- kernel-default SLES 16.0, SLE High Availability Extension 16.0, Linux Micro 6.2 +1 more 6.12.0-160000.26.1
- kernel-default-base SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.26.1.160000.2.7
- kernel-syms SLES 16.0, Linux Micro Extras 6.2, SLES for SAP applications 16.0 6.12.0-160000.26.1
suse advisories SUSE-SU-2026:20845-1SUSE-SU-2026:20876-1SUSE-SU-2026:20555-1SUSE-SU-2026:20599-1SUSE-SU-2026:20615-1SUSE-SU-2026:20570-1
- kernel-rt openSUSE Leap 16.0 6.12.0-160000.26.1
- dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.26.1
- kernel-64kb openSUSE Leap 16.0 6.12.0-160000.26.1
- kernel-syms openSUSE Leap 16.0 6.12.0-160000.26.1
- kernel-azure openSUSE Leap 16.0 6.12.0-160000.26.1
- kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.26.1
- kernel-source openSUSE Leap 16.0 6.12.0-160000.26.1
- kernel-default openSUSE Leap 16.0 6.12.0-160000.26.1
opensuse advisories openSUSE-SU-2026:20287-1
- git.kernel.org/stable/c/c2c293ea7b61f12cdaad1e99a5b4efc58c88960a commit
- git.kernel.org/stable/c/c2305b4c5fc15e20ac06c35738e0578eb4323750 commit
- git.kernel.org/stable/c/61f214a878e96e2a8750bf96a98f78c658dba60c commit
- git.kernel.org/stable/c/4a54d8fcb093761e4c56eb211cf4e39bf8401fa1 commit
- git.kernel.org/stable/c/fe3e129ab49806aaaa3f22067ebc75c2dfbe4658 commit
- git.kernel.org/stable/c/ac92151ff2494130d9fc686055d6bbb9743a673e commit
- git.kernel.org/stable/c/b91e6aafe8d356086cc621bc03e35ba2299e4788 commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-68819 updated cvss 6.1
kernel: media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()
-
Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 moreaffected: no fix available
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernelnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 24 d ago
Exploit prediction
0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Linux Linux
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
- Technology feeds
References
- git.kernel.org /stable/c/c2c293ea7b61f12cdaad1e99a5b4efc58c88960a
- git.kernel.org /stable/c/c2305b4c5fc15e20ac06c35738e0578eb4323750
- git.kernel.org /stable/c/61f214a878e96e2a8750bf96a98f78c658dba60c
- git.kernel.org /stable/c/4a54d8fcb093761e4c56eb211cf4e39bf8401fa1
- git.kernel.org /stable/c/fe3e129ab49806aaaa3f22067ebc75c2dfbe4658
- git.kernel.org /stable/c/ac92151ff2494130d9fc686055d6bbb9743a673e
- git.kernel.org /stable/c/b91e6aafe8d356086cc621bc03e35ba2299e4788
Sources
- CVE List CVE-2025-68819
- NVD CVE-2025-68819
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