CVE-2026-64463 (GCVE-0-2026-64463)
Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-10-30 12:27
VLAI
EPSS
VEX
Title
usb: typec: tcpci_rt1711h: unregister TCPCI port with devres
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: tcpci_rt1711h: unregister TCPCI port with devres
rt1711h_probe() registers the TCPCI port before requesting the interrupt
and enabling alert interrupts. If either of those later steps fails, the
probe function returns without unregistering the TCPCI port. The explicit
unregister currently only happens from the remove callback.
Register a devres action immediately after tcpci_register_port() succeeds,
so tcpci_unregister_port() runs on later probe failures and on driver
detach. Drop the remove callback to avoid unregistering the same port
twice.
This issue was identified during our ongoing static-analysis research while
reviewing kernel code.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:41 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
302c570bf36e997d55ad0d60628a2feec76954a4 , < 388f5354158fc038214b73baad43a723385fea1e
(git)
Affected: 302c570bf36e997d55ad0d60628a2feec76954a4 , < ce2e36e8759dfbfe546723810c306f42f484866d (git) Affected: 302c570bf36e997d55ad0d60628a2feec76954a4 , < 94b1abf1af94aa5a355e9f03675e07bccfc41c4b (git) Affected: 302c570bf36e997d55ad0d60628a2feec76954a4 , < e5406c8fb71cd2f89a46300a746f6e7972e621e8 (git) Affected: 302c570bf36e997d55ad0d60628a2feec76954a4 , < 569f18a83eed0b0be4615f0c7bed40fb5c50e2e6 (git) Affected: 302c570bf36e997d55ad0d60628a2feec76954a4 , < e8da46d99d3710106e7c44db14566bf9b57386b5 (git) Affected: 4309ab96ab744703871e35d829177dd9347bf643 (git) Affected: 895ec8c86e13f85b119c71d5f95491b48867955e (git) Affected: 745dcedb896a740825160228f98dbb5725a49f85 (git) Affected: 4.19.131 , < 4.20 (semver) Affected: 5.4.50 , < 5.5 (semver) Affected: 5.7.7 , < 5.8 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.8
Unaffected: 0 , < 5.8 (semver) Unaffected: 6.1.191 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
guessed |
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"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-16T15:41:14.529944Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-401",
"description": "CWE-401 Missing Release of Memory after Effective Lifetime",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-16T15:41:15.199Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/usb/typec/tcpm/tcpci_rt1711h.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "ce2e36e8759dfbfe546723810c306f42f484866d",
"status": "affected",
"version": "302c570bf36e997d55ad0d60628a2feec76954a4",
"versionType": "git"
},
{
"lessThan": "94b1abf1af94aa5a355e9f03675e07bccfc41c4b",
"status": "affected",
"version": "302c570bf36e997d55ad0d60628a2feec76954a4",
"versionType": "git"
},
{
"lessThan": "e5406c8fb71cd2f89a46300a746f6e7972e621e8",
"status": "affected",
"version": "302c570bf36e997d55ad0d60628a2feec76954a4",
"versionType": "git"
},
{
"lessThan": "569f18a83eed0b0be4615f0c7bed40fb5c50e2e6",
"status": "affected",
"version": "302c570bf36e997d55ad0d60628a2feec76954a4",
"versionType": "git"
},
{
"lessThan": "e8da46d99d3710106e7c44db14566bf9b57386b5",
"status": "affected",
"version": "302c570bf36e997d55ad0d60628a2feec76954a4",
"versionType": "git"
},
{
"status": "affected",
"version": "4309ab96ab744703871e35d829177dd9347bf643",
"versionType": "git"
},
{
"status": "affected",
"version": "895ec8c86e13f85b119c71d5f95491b48867955e",
"versionType": "git"
},
{
"status": "affected",
"version": "745dcedb896a740825160228f98dbb5725a49f85",
"versionType": "git"
},
{
"lessThan": "4.20",
"status": "affected",
"version": "4.19.131",
"versionType": "semver"
},
{
"lessThan": "5.5",
"status": "affected",
"version": "5.4.50",
"versionType": "semver"
},
{
"lessThan": "5.8",
"status": "affected",
"version": "5.7.7",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/usb/typec/tcpm/tcpci_rt1711h.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"lessThan": "5.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.39",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.145",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.96",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.39",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1.4",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.19.131",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.4.50",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.7.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpci_rt1711h: unregister TCPCI port with devres\n\nrt1711h_probe() registers the TCPCI port before requesting the interrupt\nand enabling alert interrupts. If either of those later steps fails, the\nprobe function returns without unregistering the TCPCI port. The explicit\nunregister currently only happens from the remove callback.\n\nRegister a devres action immediately after tcpci_register_port() succeeds,\nso tcpci_unregister_port() runs on later probe failures and on driver\ndetach. Drop the remove callback to avoid unregistering the same port\ntwice.\n\nThis issue was identified during our ongoing static-analysis research while\nreviewing kernel code."
}
],
"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 probe and failed-resource-unwind path is locally reachable through driver activation and locally induced resource pressure; it is not a network-facing protocol path.\nAC:L - Once a post-registration operation fails, TCPM deterministically leaves queued work and a delayed timer referencing freed memory, so exploitation does not require winning an uncontrolled race.\nPR:L - A basic local user can apply resource pressure and groom the freed kernel heap, while no capability or authentication check protects the asynchronous worker and timer paths.\nUI:N - The driver core, TCPM worker, and timer execute automatically without requiring another user to perform an action.\nS:U - The vulnerable driver and resulting kernel-memory impact remain within the host kernel security authority, with no demonstrated VM, IOMMU, or sandbox boundary crossing.\nC:H - The freed pointer-rich TCPM object can be reclaimed with attacker-influenced data, enabling kernel-memory dereferences and potentially arbitrary information disclosure.\nI:H - The freed object contains active hrtimers, work items, and TCPC operation pointers, making heap reuse potentially exploitable for arbitrary writes or control-flow hijacking.\nA:H - Queued work or timer expiry accesses the freed TCPM object and can reliably cause an oops, panic, timer corruption, or persistent system hang."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:56:08.330Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/ce2e36e8759dfbfe546723810c306f42f484866d"
},
{
"url": "https://git.kernel.org/stable/c/94b1abf1af94aa5a355e9f03675e07bccfc41c4b"
},
{
"url": "https://git.kernel.org/stable/c/e5406c8fb71cd2f89a46300a746f6e7972e621e8"
},
{
"url": "https://git.kernel.org/stable/c/569f18a83eed0b0be4615f0c7bed40fb5c50e2e6"
},
{
"url": "https://git.kernel.org/stable/c/e8da46d99d3710106e7c44db14566bf9b57386b5"
}
],
"title": "usb: typec: tcpci_rt1711h: unregister TCPCI port with devres",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64463",
"datePublished": "2026-07-25T08:51:29.720Z",
"dateReserved": "2026-07-19T15:36:31.789Z",
"dateUpdated": "2026-10-19T20:38:30.882Z",
"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
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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.