CVE-2026-64565 (GCVE-0-2026-64565)
Vulnerability from cvelistv5 – Published: 2026-08-04 06:23 – Updated: 2026-08-19 16:28
VLAI
EPSS
VEX
Title
Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()
Summary
In the Linux kernel, the following vulnerability has been resolved:
Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()
The `ims_pcu_process_data()` processes incoming URB data byte by byte.
However, it fails to check if the `read_pos` index exceeds
IMS_PCU_BUF_SIZE.
If a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE,
`read_pos` will increment indefinitely. Moreover, since `read_pos` is
located immediately after `read_buf`, the attacker can overwrite
`read_pos` itself to arbitrarily control the index.
This manipulated `read_pos` is subsequently used in
`ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a
heap buffer overflow.
Specifically, an attacker can overwrite the `cmd_done.wait.head` located
at offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`.
Consequently, when the driver calls `complete(&pcu->cmd_done)`, it
triggers a control flow hijack by using the manipulated pointer.
Fix this by adding a bounds check for `read_pos` before writing to
`read_buf`. If the packet is too long, discard it, log a warning,
and reset the parser state.
[dtor: factor out resetting packet state, reset checksum as well]
Severity
No CVSS data available.
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
628329d52474323938a03826941e166bc7c8eff4 , < 06cfff93fd40441292567b999091beab11c74504
(git)
Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 992a7173364dcf63e30012af43da3c2f279839f9 (git) Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 3a801bc75ba1d121d0ed60e7234f93ba5651d87d (git) Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 40bbbf2e91fd60715525bf0405c67876af817edf (git) Affected: 628329d52474323938a03826941e166bc7c8eff4 , < ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49 (git) Affected: 628329d52474323938a03826941e166bc7c8eff4 , < d03a740e087de7dcb2a26dc1123377bd3d1d84ca (git) Affected: 628329d52474323938a03826941e166bc7c8eff4 , < 875115b82c295277b81b6dfee7debc725f44e854 (git) |
guessed | |
| Linux | Linux |
Affected:
3.10
Unaffected: 0 , < 3.10 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/input/misc/ims-pcu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "06cfff93fd40441292567b999091beab11c74504",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "992a7173364dcf63e30012af43da3c2f279839f9",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "3a801bc75ba1d121d0ed60e7234f93ba5651d87d",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "40bbbf2e91fd60715525bf0405c67876af817edf",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "d03a740e087de7dcb2a26dc1123377bd3d1d84ca",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "875115b82c295277b81b6dfee7debc725f44e854",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/input/misc/ims-pcu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"lessThan": "3.10",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.265",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.216",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.183",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.148",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.101",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.42",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1",
"versionStartIncluding": "3.10",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()\n\nThe `ims_pcu_process_data()` processes incoming URB data byte by byte.\nHowever, it fails to check if the `read_pos` index exceeds\nIMS_PCU_BUF_SIZE.\n\nIf a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE,\n`read_pos` will increment indefinitely. Moreover, since `read_pos` is\nlocated immediately after `read_buf`, the attacker can overwrite\n`read_pos` itself to arbitrarily control the index.\n\nThis manipulated `read_pos` is subsequently used in\n`ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a\nheap buffer overflow.\n\nSpecifically, an attacker can overwrite the `cmd_done.wait.head` located\nat offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`.\nConsequently, when the driver calls `complete(\u0026pcu-\u003ecmd_done)`, it\ntriggers a control flow hijack by using the manipulated pointer.\n\nFix this by adding a bounds check for `read_pos` before writing to\n`read_buf`. If the packet is too long, discard it, log a warning,\nand reset the parser state.\n\n[dtor: factor out resetting packet state, reset checksum as well]"
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:28:39.404Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/06cfff93fd40441292567b999091beab11c74504"
},
{
"url": "https://git.kernel.org/stable/c/992a7173364dcf63e30012af43da3c2f279839f9"
},
{
"url": "https://git.kernel.org/stable/c/3a801bc75ba1d121d0ed60e7234f93ba5651d87d"
},
{
"url": "https://git.kernel.org/stable/c/40bbbf2e91fd60715525bf0405c67876af817edf"
},
{
"url": "https://git.kernel.org/stable/c/ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49"
},
{
"url": "https://git.kernel.org/stable/c/d03a740e087de7dcb2a26dc1123377bd3d1d84ca"
},
{
"url": "https://git.kernel.org/stable/c/875115b82c295277b81b6dfee7debc725f44e854"
}
],
"title": "Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64565",
"datePublished": "2026-08-04T06:23:24.089Z",
"dateReserved": "2026-07-19T15:36:31.797Z",
"dateUpdated": "2026-08-19T16:28:39.404Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-64565",
"date": "2026-10-03",
"epss": "0.00232",
"percentile": "0.12794"
},
"microsoft_vex": {
"current_release_date": "2026-08-09T01:41:47.000Z",
"cve": "CVE-2026-64565",
"id": "msrc_CVE-2026-64565",
"initial_release_date": "2026-08-07T01:07:30.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64565.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/input/misc/ims-pcu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "06cfff93fd40441292567b999091beab11c74504",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "992a7173364dcf63e30012af43da3c2f279839f9",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "3a801bc75ba1d121d0ed60e7234f93ba5651d87d",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "40bbbf2e91fd60715525bf0405c67876af817edf",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "d03a740e087de7dcb2a26dc1123377bd3d1d84ca",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
},
{
"lessThan": "875115b82c295277b81b6dfee7debc725f44e854",
"status": "affected",
"version": "628329d52474323938a03826941e166bc7c8eff4",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/input/misc/ims-pcu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"lessThan": "3.10",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()\n\nThe `ims_pcu_process_data()` processes incoming URB data byte by byte.\nHowever, it fails to check if the `read_pos` index exceeds\nIMS_PCU_BUF_SIZE.\n\nIf a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE,\n`read_pos` will increment indefinitely. Moreover, since `read_pos` is\nlocated immediately after `read_buf`, the attacker can overwrite\n`read_pos` itself to arbitrarily control the index.\n\nThis manipulated `read_pos` is subsequently used in\n`ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a\nheap buffer overflow.\n\nSpecifically, an attacker can overwrite the `cmd_done.wait.head` located\nat offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`.\nConsequently, when the driver calls `complete(\u0026pcu-\u003ecmd_done)`, it\ntriggers a control flow hijack by using the manipulated pointer.\n\nFix this by adding a bounds check for `read_pos` before writing to\n`read_buf`. If the packet is too long, discard it, log a warning,\nand reset the parser state.\n\n[dtor: factor out resetting packet state, reset checksum as well]"
}
],
"id": "CVE-2026-64565",
"lastModified": "2026-08-19T17:20:16.457",
"metrics": {},
"published": "2026-08-04T07:16:31.477",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/06cfff93fd40441292567b999091beab11c74504"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/3a801bc75ba1d121d0ed60e7234f93ba5651d87d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/40bbbf2e91fd60715525bf0405c67876af817edf"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/875115b82c295277b81b6dfee7debc725f44e854"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/992a7173364dcf63e30012af43da3c2f279839f9"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d03a740e087de7dcb2a26dc1123377bd3d1d84ca"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-08-25T15:02:59+00:00",
"cve": "CVE-2026-64565",
"id": "CVE-2026-64565",
"initial_release_date": "2026-08-04T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64565.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-10-03T00:41:25Z",
"cve": "CVE-2026-64565",
"id": "CVE-2026-64565",
"initial_release_date": "2026-08-06T23:56:38Z",
"product_status:known_affected": "673",
"product_status:known_not_affected": "60",
"product_status:recommended": "252",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-64565",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64565.json",
"version": "11"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…
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.
Loading…
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.
Loading…