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Vulnerability · Published Oct 18, 2026 · Assigned by Linux

CVE-2026-98756usb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe

Unrated

In plain English

A security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 92.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe The Cadence USBSS controller is a two-function PCI device. The first probed function allocates the driver data and stores it with pci_set_drvdata(), while the second function reuses it via pci_get_drvdata() when pci_is_enabled() reports that the first function has already been probed. When the second function is probed while the first one has been enabled but has not yet set its driver data, pci_get_drvdata() returns NULL, and the subsequent wrap->devfn assignment dereferences a NULL pointer and crashes the kernel. logs: Call trace: cdns3_pci_probe+0xa4/0x300 local_pci_probe+0x44/0xa8 pci_call_probe+0x54/0x158 pci_device_probe+0x84/0x100 really_probe+0x184/0x3d0 __driver_probe_device+0x80/0x178 driver_probe_device+0x44/0xe8 __driver_attach+0xec/0x1f8 bus_for_each_dev+0x7c/0xe0 driver_attach+0x28/0x38 bus_add_driver+0x110/0x238 driver_register+0x64/0x128 __pci_register_driver+0x50/0x60 cdns3_pci_driver_init+0x28/0x38 do_one_initcall+0x5c/0x280 do_initcalls+0x104/0x1d8 kernel_init_freeable+0x140/0x218 kernel_init+0x28/0x1f8 ret_from_fork+0x10/0x20 Return -EPROBE_DEFER in this case so that probing is retried after the first function has completed its probe.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-98756
Debian:13linux6.12.113-1DEBIAN-CVE-2026-98756
Debian:14linux7.2.10-1DEBIAN-CVE-2026-98756
Debian:12linux-6.126.12.113-1~deb12u1DEBIAN-CVE-2026-98756
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98756
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-98756
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-98756
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-98756

Affected products (as reported)

VendorProductVersions
Linux Linux 7733f6c32e36ff9d7adadf40001039bf219b1cbe – before 399b18b18f54495eeeda8d88e039e6af27d020c97733f6c32e36ff9d7adadf40001039bf219b1cbe – before 88b473800ae11397e2e169aff2e17b041c0404097733f6c32e36ff9d7adadf40001039bf219b1cbe – before fc13243658da9ed3c4c94aaff77c36a10f441b897733f6c32e36ff9d7adadf40001039bf219b1cbe – before dbdd0ca9a7eac140697a366f698a0e2bb02a06a17733f6c32e36ff9d7adadf40001039bf219b1cbe – before 549c04df02f1bb5a10342f32e2c87f5d27c972797733f6c32e36ff9d7adadf40001039bf219b1cbe – before d16046f1ace2691b6a946f022fe6dc215936880b7733f6c32e36ff9d7adadf40001039bf219b1cbe – before 45b606418bae73c7cde9f0e57e5b0977c816a7c07733f6c32e36ff9d7adadf40001039bf219b1cbe – before e5052f2c5c73c1dcca42bafc0bc737af2b2af059
Linux Linux 5.4

References