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NVD / CVE Program· CNA Linux

CVE-2025-68819: media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 4a54d8fcb093761e4c56eb211cf4e39bf8401fa1, 61f214a878e96e2a8750bf96a98f78c658dba60c, ac92151ff2494130d9fc686055d6bbb9743a673e.

Low priority for now. Upgrade to Linux Linux 4a54d8fcb093761e4c56eb211cf4e39bf8401fa1, 61f214a878e96e2a8750bf96a98f78c658dba60c, ac92151ff2494130d9fc686055d6bbb9743a673e or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Jan 13, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 4th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-68819

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.28affected
    • 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 and later · before c2c293ea7b61f12cdaad1e99a5b4efc58c88960aaffected · git
    • 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 and later · before c2305b4c5fc15e20ac06c35738e0578eb4323750affected · git
    • 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 and later · before 61f214a878e96e2a8750bf96a98f78c658dba60caffected · git
    • 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 and later · before 4a54d8fcb093761e4c56eb211cf4e39bf8401fa1affected · git
    • 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 and later · before fe3e129ab49806aaaa3f22067ebc75c2dfbe4658affected · git
    • 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 and later · before ac92151ff2494130d9fc686055d6bbb9743a673eaffected · git
    • 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 and later · before b91e6aafe8d356086cc621bc03e35ba2299e4788affected · git
    • before 2.6.28not affected · semver
    • 5.10.248 and later · up to and including 5.10.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.162-16.1.162-1
Debian:13linuxbefore 6.12.69-16.12.69-1
Debian:14linuxbefore 6.18.3-16.18.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-68816Jan 13, 2026 · net/mlx5: fw_tracer, Validate format string parameters
    0Monitor
  • ← EarlierCVE-2025-68818Jan 13, 2026 · scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path"
    35Monitor
  • Later →CVE-2025-68820Jan 13, 2026 · ext4: xattr: fix null pointer deref in ext4_raw_inode()
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux4a54d8fcb093761e4c56eb211cf4e39bf8401fa1Vendor (CNA)
Linux Linux61f214a878e96e2a8750bf96a98f78c658dba60cVendor (CNA)
Linux Linuxac92151ff2494130d9fc686055d6bbb9743a673eVendor (CNA)
Linux Linuxb91e6aafe8d356086cc621bc03e35ba2299e4788Vendor (CNA)
Linux Linuxc2305b4c5fc15e20ac06c35738e0578eb4323750Vendor (CNA)
Linux Linuxc2c293ea7b61f12cdaad1e99a5b4efc58c88960aVendor (CNA)
Linux Linuxfe3e129ab49806aaaa3f22067ebc75c2dfbe4658Vendor (CNA)
debian:linux6.1.162-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-688110 days apartsvcrdma: use rc_pageoff for memcpy byte offset
    39Monitor
  • CVE-2026-72098214 days apartdm-verity: fix buffer overflow in FEC calculation
    39Monitor
  • CVE-2026-68128209 days apartice: reject out-of-range ptype in ice_parser_profile_init
    35Monitor
  • CVE-2026-64515193 days apartwifi: mac80211: fix MLE defragmentation
    33Monitor
  • CVE-2026-64552195 days apartvirtio-net: fix len check in receive_big()
    33Monitor
  • CVE-2026-68376209 days apartsctp: fix auth_hmacs array size in struct sctp_cookie
    32Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records