{"id":"CVE-2026-98756","title":"kernel: usb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe (CVE-2026-98756)","summary":"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 Inte…","severity":"medium","cvss":4.1,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-476","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T04:06:24+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98756.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98756.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98756"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555053"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98756"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98756"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98756.mbox"},{"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"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00168,"epssPercentile":0.05987,"ingestedAt":"2026-10-18T16:47:32.497Z","slug":"CVE-2026-98756","body":"## Overview\n\nA 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.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98756.json)\n\n**kernel: usb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n\nNot affected:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":22.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228180,"id":"CVE-2026-98756","ts":1792758171368,"field":"cvss","old":null,"new":"4.1"},{"seq":228179,"id":"CVE-2026-98756","ts":1792758171368,"field":"severity","old":"none","new":"medium"}]}