CVE-2025-68819 (GCVE-0-2025-68819)
Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-10-19 18:15
VLAI
EPSS
VEX
Title
media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()
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.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:05 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 , < c2c293ea7b61f12cdaad1e99a5b4efc58c88960a
(git)
Affected: 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 , < c2305b4c5fc15e20ac06c35738e0578eb4323750 (git) Affected: 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 , < 61f214a878e96e2a8750bf96a98f78c658dba60c (git) Affected: 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 , < 4a54d8fcb093761e4c56eb211cf4e39bf8401fa1 (git) Affected: 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 , < fe3e129ab49806aaaa3f22067ebc75c2dfbe4658 (git) Affected: 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 , < ac92151ff2494130d9fc686055d6bbb9743a673e (git) Affected: 60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817 , < b91e6aafe8d356086cc621bc03e35ba2299e4788 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.28
Unaffected: 0 , < 2.6.28 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.198 , ≤ 5.15.* (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.3 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix) |
guessed |
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"programFiles": [
"drivers/media/usb/dvb-usb/dtv5100.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "c2c293ea7b61f12cdaad1e99a5b4efc58c88960a",
"status": "affected",
"version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817",
"versionType": "git"
},
{
"lessThan": "c2305b4c5fc15e20ac06c35738e0578eb4323750",
"status": "affected",
"version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817",
"versionType": "git"
},
{
"lessThan": "61f214a878e96e2a8750bf96a98f78c658dba60c",
"status": "affected",
"version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817",
"versionType": "git"
},
{
"lessThan": "4a54d8fcb093761e4c56eb211cf4e39bf8401fa1",
"status": "affected",
"version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817",
"versionType": "git"
},
{
"lessThan": "fe3e129ab49806aaaa3f22067ebc75c2dfbe4658",
"status": "affected",
"version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817",
"versionType": "git"
},
{
"lessThan": "ac92151ff2494130d9fc686055d6bbb9743a673e",
"status": "affected",
"version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817",
"versionType": "git"
},
{
"lessThan": "b91e6aafe8d356086cc621bc03e35ba2299e4788",
"status": "affected",
"version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/media/usb/dvb-usb/dtv5100.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.28"
},
{
"lessThan": "2.6.28",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.64",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.248",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.198",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.160",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.120",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.64",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.3",
"versionStartIncluding": "2.6.28",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19",
"versionStartIncluding": "2.6.28",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()\n\nrlen value is a user-controlled value, but dtv5100_i2c_msg() does not\ncheck the size of the rlen value. Therefore, if it is set to a value\nlarger than sizeof(st-\u003edata), an out-of-bounds vuln occurs for st-\u003edata.\n\nTherefore, we need to add proper range checking to prevent this vuln."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerable path is reached through an I2C_RDWR ioctl on the local /dev/i2c-N device; network, RF, and USB responses do not control rlen.\nAC:L - An attacker can reliably submit a two-message transaction with a second-message length up to 8192 bytes, requiring no race or condition outside their control.\nPR:L - The ioctl path has no capability or authentication check, so an unprivileged local account with ordinary device-node DAC access can trigger it.\nUI:N - Once the affected DVB adapter and i2c-dev interface are present, the attacker can trigger the overflow without another user\u0027s action.\nS:U - Exploitation compromises the host kernel from a local process without crossing a separate virtualization or IOMMU security authority.\nC:H - The attacker-controlled overflow can corrupt adjacent kernel objects and plausibly enable control-flow hijacking or primitives exposing arbitrary kernel memory.\nI:H - Up to 8192 attacker-controlled bytes are copied into an 80-byte heap object, providing a large heap-corruption primitive suitable for arbitrary modification or code execution.\nA:H - The overflow can corrupt critical kernel state and cause an oops or panic, while hardened bounds checking may itself terminate the kernel."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:11:46.937Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/c2c293ea7b61f12cdaad1e99a5b4efc58c88960a"
},
{
"url": "https://git.kernel.org/stable/c/c2305b4c5fc15e20ac06c35738e0578eb4323750"
},
{
"url": "https://git.kernel.org/stable/c/61f214a878e96e2a8750bf96a98f78c658dba60c"
},
{
"url": "https://git.kernel.org/stable/c/4a54d8fcb093761e4c56eb211cf4e39bf8401fa1"
},
{
"url": "https://git.kernel.org/stable/c/fe3e129ab49806aaaa3f22067ebc75c2dfbe4658"
},
{
"url": "https://git.kernel.org/stable/c/ac92151ff2494130d9fc686055d6bbb9743a673e"
},
{
"url": "https://git.kernel.org/stable/c/b91e6aafe8d356086cc621bc03e35ba2299e4788"
}
],
"title": "media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68819",
"datePublished": "2026-01-13T15:29:22.695Z",
"dateReserved": "2025-12-24T10:30:51.048Z",
"dateUpdated": "2026-10-19T18:15:10.171Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.