CVE-2026-64463 (GCVE-0-2026-64463)
Vulnerability from cvelistv5
Published
2026-07-25 08:51
Modified
2026-08-17 04:56
Severity ?
VLAI Severity ?
EPSS score ?
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 302c570bf36e997d55ad0d60628a2feec76954a4 Version: 302c570bf36e997d55ad0d60628a2feec76954a4 Version: 302c570bf36e997d55ad0d60628a2feec76954a4 Version: 302c570bf36e997d55ad0d60628a2feec76954a4 Version: 302c570bf36e997d55ad0d60628a2feec76954a4 Version: 4309ab96ab744703871e35d829177dd9347bf643 Version: 895ec8c86e13f85b119c71d5f95491b48867955e Version: 745dcedb896a740825160228f98dbb5725a49f85 Version: 4.19.131 ≤ Version: 5.4.50 ≤ Version: 5.7.7 ≤ |
||
{
"containers": {
"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"
},
{
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"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": "2026-08-17T04:56:08.330Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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