Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.35, < 5.4.299 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/2ee32c4c4f636e474cd8ab7c19a68cf36072ea93Patch
- https://git.kernel.org/stable/c/44822df89e8f3386871d9cad563ece8e2fd8f0e7Patch
- https://git.kernel.org/stable/c/4bd570f494124608a0696da070f00236a96fb610Patch
- https://git.kernel.org/stable/c/5ff2826c998370bf7f9ae26fe802140d220e3510Patch
- https://git.kernel.org/stable/c/b990c8c6ff50649ad3352507398e443b1e3527b2Patch
- https://git.kernel.org/stable/c/ce3b7766276894d2fbb07e2047a171f9deb965dePatch
- https://git.kernel.org/stable/c/d7286005e8fde0a430dc180a9f46c088c7d74483Patch
- https://git.kernel.org/stable/c/fafa7450075f41d232bc785a4ebcbf16374f2076Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing ListThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-089022.html
FAQ
What is CVE-2025-39846?
CVE-2025-39846 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...
How severe is CVE-2025-39846?
CVE-2025-39846 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-39846?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.