CVE-2026-64454

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For async callbacks that helper only uses\nplain spin_unlock()/spin_lock(), so the gadget ->disconnect() callback\nstill runs with IRQs disabled and any sleepable callback trips Lockdep.\n\nThis issue was found by our static analysis tool and then manually\nreviewed against the current tree.\n\nThe grounded PoC kept the dwc3_gadget_suspend() ->\ndwc3_disconnect_gadget() -> gadget_driver->disconnect() chain, and\nLockdep reported:\n\n BUG: sleeping function called from invalid context\n gadget_disconnect+0x21/0x39 [vuln_msv]\n dwc3_gadget_suspend.constprop.0+0x2b/0x42 [vuln_msv]\n\nKeep the disconnect callback selection in one common helper, but add a\nsleepable suspend-side wrapper which snapshots the callback under\ndwc->lock and then runs it after spin_unlock_irqrestore(). The regular\nevent path still uses the existing spin_unlock()/spin_lock() window."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/dwc3/gadget.c"], "versions": [{"version": "20351ddb1f41cfb3ae20e105425ef43a28393d76", "lessThan": "b399be2958456efe1b64b19c55a54a24e9035769", "status": "affected", "versionType": "git"}, {"version": "ad43004fd5326bec4466ecc8a07fe0e570b553ca", "lessThan": "48958478cb8dbc429a5b19f36e866b63d6297d1d", "status": "affected", "versionType": "git"}, {"version": "c8540870af4ce6ddeb27a7bb5498b75fb29b643c", "lessThan": "5e5798880eb1533a7de6fb68eb14b2d8202ebf76", "status": "affected", "versionType": "git"}, {"version": "c8540870af4ce6ddeb27a7bb5498b75fb29b643c", "lessThan": "e0e4f15d4225fb7156cc0e3c21eb8953114f9b89", "status": "affected", "versionType": "git"}, {"version": "c8540870af4ce6ddeb27a7bb5498b75fb29b643c", "lessThan": "c4e232bd07fe2b69a6e5c380db41dd36b95e0524", "status": "affected", "versionType": "git"}, {"version": "c8540870af4ce6ddeb27a7bb5498b75fb29b643c", "lessThan": "642e04f5c292d04070ae6e4374fbf14cc40a2465", "status": "affected", "versionType": "git"}, {"version": "c8540870af4ce6ddeb27a7bb5498b75fb29b643c", "lessThan": "010382937fb69892b3469ac4d30af072262f59e8", "status": "affected", "versionType": "git"}, {"version": "06684c72b6b153dc434bb6ccebbb49f4cd812b5e", "status": "affected", "versionType": "git"}, {"version": "5.15.128", "lessThan": "5.15.212", "status": "affected", "versionType": "semver"}, {"version": "6.1.30", "lessThan": "6.1.178", "status": "affected", "versionType": "semver"}, {"version": "6.3.4", "lessThan": "6.4", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/dwc3/gadget.c"], "versions": 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For async callbacks that helper only uses\nplain spin_unlock()/spin_lock(), so the gadget ->disconnect() callback\nstill runs with IRQs disabled and any sleepable callback trips Lockdep.\n\nThis issue was found by our static analysis tool and then manually\nreviewed against the current tree.\n\nThe grounded PoC kept the dwc3_gadget_suspend() ->\ndwc3_disconnect_gadget() -> gadget_driver->disconnect() chain, and\nLockdep reported:\n\n BUG: sleeping function called from invalid context\n gadget_disconnect+0x21/0x39 [vuln_msv]\n dwc3_gadget_suspend.constprop.0+0x2b/0x42 [vuln_msv]\n\nKeep the disconnect callback selection in one common helper, but add a\nsleepable suspend-side wrapper which snapshots the callback under\ndwc->lock and then runs it after spin_unlock_irqrestore(). The regular\nevent path still uses the existing spin_unlock()/spin_lock() window."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "5.15.128"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "6.1.30"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.96", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.39", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.4", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "6.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "6.3.4"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:55:58.408Z"}}}, "cveMetadata": {"cveId": "CVE-2026-64454", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:44:52.294Z", "dateReserved": "2026-07-19T15:36:31.789Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-07-25T08:51:23.212Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"matchCriteriaId": "9E1C36BE-F9D8-40B6-8281-5B8F9B42322D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc7:*:*:*:*:*:*", "matchCriteriaId": "1D6CAA59-F0EF-4E0B-8C23-EC9535008572", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*", "matchCriteriaId": "5E8B9085-7ADB-4A05-89EF-12949B6A0509", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:*", "matchCriteriaId": "1FC0D50D-9D58-4947-A197-A5A3FF07E7E3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: run gadget disconnect from sleepable suspend context\n\ndwc3_gadget_suspend() takes dwc->lock with IRQs disabled and then calls\ndwc3_disconnect_gadget(). For async callbacks that helper only uses\nplain spin_unlock()/spin_lock(), so the gadget ->disconnect() callback\nstill runs with IRQs disabled and any sleepable callback trips Lockdep.\n\nThis issue was found by our static analysis tool and then manually\nreviewed against the current tree.\n\nThe grounded PoC kept the dwc3_gadget_suspend() ->\ndwc3_disconnect_gadget() -> gadget_driver->disconnect() chain, and\nLockdep reported:\n\n BUG: sleeping function called from invalid context\n gadget_disconnect+0x21/0x39 [vuln_msv]\n dwc3_gadget_suspend.constprop.0+0x2b/0x42 [vuln_msv]\n\nKeep the disconnect callback selection in one common helper, but add a\nsleepable suspend-side wrapper which snapshots the callback under\ndwc->lock and then runs it after spin_unlock_irqrestore(). The regular\nevent path still uses the existing spin_unlock()/spin_lock() window."}], "id": "CVE-2026-64454", "lastModified": "2026-11-12T17:43:45.183", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-64454", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:38:45.590842Z", "version": "2.0.3"}}]}, "published": "2026-07-25T10:17:30.407", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/010382937fb69892b3469ac4d30af072262f59e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/48958478cb8dbc429a5b19f36e866b63d6297d1d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5e5798880eb1533a7de6fb68eb14b2d8202ebf76"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/642e04f5c292d04070ae6e4374fbf14cc40a2465"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b399be2958456efe1b64b19c55a54a24e9035769"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c4e232bd07fe2b69a6e5c380db41dd36b95e0524"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e0e4f15d4225fb7156cc0e3c21eb8953114f9b89"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: usb: dwc3: run gadget disconnect from sleepable suspend context", "id": "2507206", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507206"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-663", "details": ["A flaw was found in the Linux kernel's USB dwc3 driver. A local attacker could trigger a condition where a sleeping function is called from an invalid context during a USB gadget suspend operation. This can lead to system instability or a kernel panic, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-64454", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64454\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64454\nhttps://lore.kernel.org/linux-cve-announce/2026072541-CVE-2026-64454-10fc@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[20351ddb1f41cfb3ae20e105425ef43a28393d76,b399be2958456efe1b64b19c55a54a24e9035769)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad43004fd5326bec4466ecc8a07fe0e570b553ca,48958478cb8dbc429a5b19f36e866b63d6297d1d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c8540870af4ce6ddeb27a7bb5498b75fb29b643c,5e5798880eb1533a7de6fb68eb14b2d8202ebf76)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c8540870af4ce6ddeb27a7bb5498b75fb29b643c,642e04f5c292d04070ae6e4374fbf14cc40a2465)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c8540870af4ce6ddeb27a7bb5498b75fb29b643c,e0e4f15d4225fb7156cc0e3c21eb8953114f9b89)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c8540870af4ce6ddeb27a7bb5498b75fb29b643c,c4e232bd07fe2b69a6e5c380db41dd36b95e0524)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c8540870af4ce6ddeb27a7bb5498b75fb29b643c,010382937fb69892b3469ac4d30af072262f59e8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "06684c72b6b153dc434bb6ccebbb49f4cd812b5e"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.128,5.15.212)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.30,6.1.178)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.3.4,6.4)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.212,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.178,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.145,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.96,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.39,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.4,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-25T22:15:03.724411+00:00", "updated": "2026-08-02T12:45:06.524297+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}