CVE-2026-98756

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98756", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.368Z", "datePublished": "2026-10-18T15:47:42.085Z", "dateUpdated": "2026-10-30T12:39:26.925Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:39:26.925Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe\n\nThe Cadence USBSS controller is a two-function PCI device. The first\nprobed function allocates the driver data and stores it with\npci_set_drvdata(), while the second function reuses it via\npci_get_drvdata() when pci_is_enabled() reports that the first\nfunction has already been probed.\n\nWhen the second function is probed while the first one has been\nenabled but has not yet set its driver data, pci_get_drvdata()\nreturns NULL, and the subsequent wrap->devfn assignment dereferences\na NULL pointer and crashes the kernel.\nlogs:\nCall trace:\n cdns3_pci_probe+0xa4/0x300\n local_pci_probe+0x44/0xa8\n pci_call_probe+0x54/0x158\n pci_device_probe+0x84/0x100\n really_probe+0x184/0x3d0\n __driver_probe_device+0x80/0x178\n driver_probe_device+0x44/0xe8\n __driver_attach+0xec/0x1f8\n bus_for_each_dev+0x7c/0xe0\n driver_attach+0x28/0x38\n bus_add_driver+0x110/0x238\n driver_register+0x64/0x128\n __pci_register_driver+0x50/0x60\n cdns3_pci_driver_init+0x28/0x38\n do_one_initcall+0x5c/0x280\n do_initcalls+0x104/0x1d8\n kernel_init_freeable+0x140/0x218\n kernel_init+0x28/0x1f8\n ret_from_fork+0x10/0x20\n\nReturn -EPROBE_DEFER in this case so that probing is retried after\nthe first function has completed its probe."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/cdns3/cdns3-pci-wrap.c"], "versions": [{"version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "lessThan": "399b18b18f54495eeeda8d88e039e6af27d020c9", "status": "affected", "versionType": "git"}, {"version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "lessThan": "88b473800ae11397e2e169aff2e17b041c040409", "status": "affected", "versionType": "git"}, {"version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "lessThan": "fc13243658da9ed3c4c94aaff77c36a10f441b89", "status": "affected", "versionType": "git"}, {"version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "lessThan": "dbdd0ca9a7eac140697a366f698a0e2bb02a06a1", "status": "affected", "versionType": "git"}, {"version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "lessThan": "549c04df02f1bb5a10342f32e2c87f5d27c97279", "status": "affected", "versionType": "git"}, {"version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "lessThan": "d16046f1ace2691b6a946f022fe6dc215936880b", "status": "affected", "versionType": "git"}, {"version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "lessThan": "45b606418bae73c7cde9f0e57e5b0977c816a7c0", "status": "affected", "versionType": "git"}, {"version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "lessThan": "e5052f2c5c73c1dcca42bafc0bc737af2b2af059", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/cdns3/cdns3-pci-wrap.c"], "versions": [{"version": "5.4", "status": "affected"}, {"version": "0", "lessThan": "5.4", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/399b18b18f54495eeeda8d88e039e6af27d020c9"}, {"url": "https://git.kernel.org/stable/c/88b473800ae11397e2e169aff2e17b041c040409"}, {"url": "https://git.kernel.org/stable/c/fc13243658da9ed3c4c94aaff77c36a10f441b89"}, {"url": "https://git.kernel.org/stable/c/dbdd0ca9a7eac140697a366f698a0e2bb02a06a1"}, {"url": "https://git.kernel.org/stable/c/549c04df02f1bb5a10342f32e2c87f5d27c97279"}, {"url": "https://git.kernel.org/stable/c/d16046f1ace2691b6a946f022fe6dc215936880b"}, {"url": "https://git.kernel.org/stable/c/45b606418bae73c7cde9f0e57e5b0977c816a7c0"}, {"url": "https://git.kernel.org/stable/c/e5052f2c5c73c1dcca42bafc0bc737af2b2af059"}], "title": "usb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/cdns3/cdns3-pci-wrap.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "399b18b18f54495eeeda8d88e039e6af27d020c9", "status": "affected", "version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "versionType": "git"}, {"lessThan": "88b473800ae11397e2e169aff2e17b041c040409", "status": "affected", "version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "versionType": "git"}, {"lessThan": "fc13243658da9ed3c4c94aaff77c36a10f441b89", "status": "affected", "version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "versionType": "git"}, {"lessThan": "dbdd0ca9a7eac140697a366f698a0e2bb02a06a1", "status": "affected", "version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "versionType": "git"}, {"lessThan": "549c04df02f1bb5a10342f32e2c87f5d27c97279", "status": "affected", "version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "versionType": "git"}, {"lessThan": "d16046f1ace2691b6a946f022fe6dc215936880b", "status": "affected", "version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "versionType": "git"}, {"lessThan": "45b606418bae73c7cde9f0e57e5b0977c816a7c0", "status": "affected", "version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "versionType": "git"}, {"lessThan": "e5052f2c5c73c1dcca42bafc0bc737af2b2af059", "status": "affected", "version": "7733f6c32e36ff9d7adadf40001039bf219b1cbe", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/cdns3/cdns3-pci-wrap.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.4"}, {"lessThan": "5.4", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nusb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe\n\nThe Cadence USBSS controller is a two-function PCI device. The first\nprobed function allocates the driver data and stores it with\npci_set_drvdata(), while the second function reuses it via\npci_get_drvdata() when pci_is_enabled() reports that the first\nfunction has already been probed.\n\nWhen the second function is probed while the first one has been\nenabled but has not yet set its driver data, pci_get_drvdata()\nreturns NULL, and the subsequent wrap->devfn assignment dereferences\na NULL pointer and crashes the kernel.\nlogs:\nCall trace:\n cdns3_pci_probe+0xa4/0x300\n local_pci_probe+0x44/0xa8\n pci_call_probe+0x54/0x158\n pci_device_probe+0x84/0x100\n really_probe+0x184/0x3d0\n __driver_probe_device+0x80/0x178\n driver_probe_device+0x44/0xe8\n __driver_attach+0xec/0x1f8\n bus_for_each_dev+0x7c/0xe0\n driver_attach+0x28/0x38\n bus_add_driver+0x110/0x238\n driver_register+0x64/0x128\n __pci_register_driver+0x50/0x60\n cdns3_pci_driver_init+0x28/0x38\n do_one_initcall+0x5c/0x280\n do_initcalls+0x104/0x1d8\n kernel_init_freeable+0x140/0x218\n kernel_init+0x28/0x1f8\n ret_from_fork+0x10/0x20\n\nReturn -EPROBE_DEFER in this case so that probing is retried after\nthe first function has completed its probe."}], "id": "CVE-2026-98756", "lastModified": "2026-10-30T13:21:25.080", "metrics": {}, "published": "2026-10-18T16:17:29.397", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/399b18b18f54495eeeda8d88e039e6af27d020c9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/45b606418bae73c7cde9f0e57e5b0977c816a7c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/549c04df02f1bb5a10342f32e2c87f5d27c97279"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/88b473800ae11397e2e169aff2e17b041c040409"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d16046f1ace2691b6a946f022fe6dc215936880b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dbdd0ca9a7eac140697a366f698a0e2bb02a06a1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e5052f2c5c73c1dcca42bafc0bc737af2b2af059"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fc13243658da9ed3c4c94aaff77c36a10f441b89"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: usb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe", "id": "2555053", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555053"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nusb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe\nThe Cadence USBSS controller is a two-function PCI device. The first\nprobed function allocates the driver data and stores it with\npci_set_drvdata(), while the second function reuses it via\npci_get_drvdata() when pci_is_enabled() reports that the first\nfunction has already been probed.\nWhen the second function is probed while the first one has been\nenabled but has not yet set its driver data, pci_get_drvdata()\nreturns NULL, and the subsequent wrap->devfn assignment dereferences\na NULL pointer and crashes the kernel.\nlogs:\nCall trace:\ncdns3_pci_probe+0xa4/0x300\nlocal_pci_probe+0x44/0xa8\npci_call_probe+0x54/0x158\npci_device_probe+0x84/0x100\nreally_probe+0x184/0x3d0\n__driver_probe_device+0x80/0x178\ndriver_probe_device+0x44/0xe8\n__driver_attach+0xec/0x1f8\nbus_for_each_dev+0x7c/0xe0\ndriver_attach+0x28/0x38\nbus_add_driver+0x110/0x238\ndriver_register+0x64/0x128\n__pci_register_driver+0x50/0x60\ncdns3_pci_driver_init+0x28/0x38\ndo_one_initcall+0x5c/0x280\ndo_initcalls+0x104/0x1d8\nkernel_init_freeable+0x140/0x218\nkernel_init+0x28/0x1f8\nret_from_fork+0x10/0x20\nReturn -EPROBE_DEFER in this case so that probing is retried after\nthe first function has completed its probe.", "A flaw was found in the Linux kernel's Cadence USB3 driver. A local user could exploit this flaw to cause a Denial of Service (DoS) by crashing the system. During device discovery of a multi-function Cadence USBSS Peripheral Component Interconnect (PCI) device, the driver attempts to access shared data before the primary function has finished initializing it. This timing issue triggers a NULL pointer dereference, resulting in an unhandled kernel crash."], "name": "CVE-2026-98756", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98756\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98756\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98756.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7733f6c32e36ff9d7adadf40001039bf219b1cbe,549c04df02f1bb5a10342f32e2c87f5d27c97279)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7733f6c32e36ff9d7adadf40001039bf219b1cbe,d16046f1ace2691b6a946f022fe6dc215936880b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7733f6c32e36ff9d7adadf40001039bf219b1cbe,45b606418bae73c7cde9f0e57e5b0977c816a7c0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7733f6c32e36ff9d7adadf40001039bf219b1cbe,e5052f2c5c73c1dcca42bafc0bc737af2b2af059)"}}], "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": "generic", "value": "5.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "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": "2026-10-18T22:00:20.106886+00:00", "updated": "2026-10-23T19:00:23.373029+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}