CVE-2025-39846

In the Linux kernel, the following vulnerability has been resolved: pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region() In __iodyn_find_io_region(), pcmcia_make_resource() is assigned to res and used in pci_bus_alloc_resource(). There is a dereference of res in pci_bus_alloc_resource(), which could lead to a NULL pointer dereference on failure of pcmcia_make_resource(). Fix this bug by adding a check of res.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2025-09-19

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• debian:debian_linux
• linux:linux_kernel

References

• https://git.kernel.org/stable/c/2ee32c4c4f636e474cd8ab7c19a68cf36072ea93
• https://git.kernel.org/stable/c/44822df89e8f3386871d9cad563ece8e2fd8f0e7
• https://git.kernel.org/stable/c/4bd570f494124608a0696da070f00236a96fb610
• https://git.kernel.org/stable/c/5ff2826c998370bf7f9ae26fe802140d220e3510
• https://git.kernel.org/stable/c/b990c8c6ff50649ad3352507398e443b1e3527b2

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