CVE-2026-98756usb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 12 days later
· 12 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 399b18b18f54495eeeda8d88e039e6af27d020c9
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 88b473800ae11397e2e169aff2e17b041c040409
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < fc13243658da9ed3c4c94aaff77c36a10f441b89
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < dbdd0ca9a7eac140697a366f698a0e2bb02a06a1
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 549c04df02f1bb5a10342f32e2c87f5d27c97279
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < d16046f1ace2691b6a946f022fe6dc215936880b
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < 45b606418bae73c7cde9f0e57e5b0977c816a7c0
- affected 7733f6c32e36ff9d7adadf40001039bf219b1cbe – < e5052f2c5c73c1dcca42bafc0bc737af2b2af059
- affected 5.4
- unaffected < 5.4
- unaffected 5.10.273 – ≤ 5.10.*
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.56 – ≤ 6.18.*
- unaffected 7.2.10 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/399b18b18f54495eeeda8d88e039e6af27d020c9 (opens in a new tab)
- https://git.kernel.org/stable/c/88b473800ae11397e2e169aff2e17b041c040409 (opens in a new tab)
- https://git.kernel.org/stable/c/fc13243658da9ed3c4c94aaff77c36a10f441b89 (opens in a new tab)
- https://git.kernel.org/stable/c/dbdd0ca9a7eac140697a366f698a0e2bb02a06a1 (opens in a new tab)
- https://git.kernel.org/stable/c/549c04df02f1bb5a10342f32e2c87f5d27c97279 (opens in a new tab)
- https://git.kernel.org/stable/c/d16046f1ace2691b6a946f022fe6dc215936880b (opens in a new tab)
- https://git.kernel.org/stable/c/45b606418bae73c7cde9f0e57e5b0977c816a7c0 (opens in a new tab)
- https://git.kernel.org/stable/c/e5052f2c5c73c1dcca42bafc0bc737af2b2af059 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-103841 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98756)Record last updated .