CVE-2026-63908 (GCVE-0-2026-63908)
Vulnerability from cvelistv5 – Published: 2026-07-19 14:55 – Updated: 2026-07-19 14:55
VLAI
EPSS
VEX
Title
Input: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem
Summary
In the Linux kernel, the following vulnerability has been resolved:
Input: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem
When a configuration file provides an object size that is larger than the
driver's known mxt_obj_size(object), the driver intends to discard the
extra bytes.
The loop iterates using for (i = 0; i < size; i++). Inside the loop, the
condition to skip processing extra bytes is:
if (i > mxt_obj_size(object))
continue;
Since i is a 0-based index, the valid indices for the object are 0 through
mxt_obj_size(object) - 1.
When i == mxt_obj_size(object), the condition evaluates to false, and the
code processes the byte instead of discarding it.
This causes the code to calculate byte_offset = reg + i - cfg->start_ofs
and writes the byte there, overwriting exactly one byte of the adjacent
instance or object.
Update the boundary check to skip extra bytes correctly by using >=.
Severity
No CVSS data available.
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
50a77c658b80e7e3303e3bcec195b30e2b62d513 , < 862a1a32b5190241fce7a7d20229539a3926f31e
(git)
Affected: 50a77c658b80e7e3303e3bcec195b30e2b62d513 , < 5c3681c3abc35cfac6b702251382312c60d96bc2 (git) Affected: 50a77c658b80e7e3303e3bcec195b30e2b62d513 , < 1017e1c6c6c49cccbcda9bbcfa49e50b0b6dad39 (git) Affected: 50a77c658b80e7e3303e3bcec195b30e2b62d513 , < e9b62996ba537774f68fecfd7eecb5aec1713952 (git) Affected: 50a77c658b80e7e3303e3bcec195b30e2b62d513 , < ae92e334544263a02d9f99e18385e718c44392c9 (git) Affected: 50a77c658b80e7e3303e3bcec195b30e2b62d513 , < 7f95f4792c0dc767fcb8e405391e779ab419d55a (git) Affected: 50a77c658b80e7e3303e3bcec195b30e2b62d513 , < 6c6b989b4ebf22b086fdfcac2163b5cb55e34d8f (git) Affected: 50a77c658b80e7e3303e3bcec195b30e2b62d513 , < baa0210fb6a9dc3882509a9411b6d284d88fe30e (git) |
guessed | |
| Linux | Linux |
Affected:
3.17
Unaffected: 0 , < 3.17 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.93 , ≤ 6.12.* (semver) Unaffected: 6.18.35 , ≤ 6.18.* (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
{
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{
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"versionType": "semver"
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{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver"
},
{
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"version": "6.1.176",
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{
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{
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"version": "6.12.93",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.18.35",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.12",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
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{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.259",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
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"versionEndExcluding": "5.15.210",
"versionStartIncluding": "3.17",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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{
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.93",
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},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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{
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"negate": false,
"operator": "OR"
}
]
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem\n\nWhen a configuration file provides an object size that is larger than the\ndriver\u0027s known mxt_obj_size(object), the driver intends to discard the\nextra bytes.\n\nThe loop iterates using for (i = 0; i \u003c size; i++). Inside the loop, the\ncondition to skip processing extra bytes is:\n\n if (i \u003e mxt_obj_size(object))\n continue;\n\nSince i is a 0-based index, the valid indices for the object are 0 through\nmxt_obj_size(object) - 1.\n\nWhen i == mxt_obj_size(object), the condition evaluates to false, and the\ncode processes the byte instead of discarding it.\n\nThis causes the code to calculate byte_offset = reg + i - cfg-\u003estart_ofs\nand writes the byte there, overwriting exactly one byte of the adjacent\ninstance or object.\n\nUpdate the boundary check to skip extra bytes correctly by using \u003e=."
}
],
"providerMetadata": {
"dateUpdated": "2026-07-19T14:55:14.349Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"url": "https://git.kernel.org/stable/c/862a1a32b5190241fce7a7d20229539a3926f31e"
},
{
"url": "https://git.kernel.org/stable/c/5c3681c3abc35cfac6b702251382312c60d96bc2"
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{
"url": "https://git.kernel.org/stable/c/1017e1c6c6c49cccbcda9bbcfa49e50b0b6dad39"
},
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"url": "https://git.kernel.org/stable/c/e9b62996ba537774f68fecfd7eecb5aec1713952"
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{
"url": "https://git.kernel.org/stable/c/ae92e334544263a02d9f99e18385e718c44392c9"
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{
"url": "https://git.kernel.org/stable/c/7f95f4792c0dc767fcb8e405391e779ab419d55a"
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"url": "https://git.kernel.org/stable/c/6c6b989b4ebf22b086fdfcac2163b5cb55e34d8f"
},
{
"url": "https://git.kernel.org/stable/c/baa0210fb6a9dc3882509a9411b6d284d88fe30e"
}
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"title": "Input: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem",
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"cveId": "CVE-2026-63908",
"datePublished": "2026-07-19T14:55:14.349Z",
"dateReserved": "2026-07-19T07:54:57.020Z",
"dateUpdated": "2026-07-19T14:55:14.349Z",
"state": "PUBLISHED"
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"date": "2026-09-30",
"epss": "0.0022",
"percentile": "0.11229"
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem\n\nWhen a configuration file provides an object size that is larger than the\ndriver\u0027s known mxt_obj_size(object), the driver intends to discard the\nextra bytes.\n\nThe loop iterates using for (i = 0; i \u003c size; i++). Inside the loop, the\ncondition to skip processing extra bytes is:\n\n if (i \u003e mxt_obj_size(object))\n continue;\n\nSince i is a 0-based index, the valid indices for the object are 0 through\nmxt_obj_size(object) - 1.\n\nWhen i == mxt_obj_size(object), the condition evaluates to false, and the\ncode processes the byte instead of discarding it.\n\nThis causes the code to calculate byte_offset = reg + i - cfg-\u003estart_ofs\nand writes the byte there, overwriting exactly one byte of the adjacent\ninstance or object.\n\nUpdate the boundary check to skip extra bytes correctly by using \u003e=."
}
],
"id": "CVE-2026-63908",
"lastModified": "2026-07-27T17:44:23.777",
"metrics": {},
"published": "2026-07-19T16:17:08.620",
"references": [
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],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
},
"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-08-07T13:50:05+00:00",
"cve": "CVE-2026-63908",
"id": "CVE-2026-63908",
"initial_release_date": "2026-07-19T00:00:00+00:00",
"product_status:known_not_affected": "275",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Input: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63908.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "low",
"current_release_date": "2026-09-18T00:46:39Z",
"cve": "CVE-2026-63908",
"id": "CVE-2026-63908",
"initial_release_date": "2026-07-21T13:03:48Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "578",
"product_status:known_not_affected": "172",
"product_status:recommended": "250",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-63908",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-63908.json",
"version": "9"
}
}
}
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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.
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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.
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