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    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.

    Published:Sep 19, 2025
    Last Modified:May 12, 2026
    EPS:Sep 19, 2025
    EPSS Score:0.00016
    CVSS Score:5.5

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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
    https://git.kernel.org/stable/c/ce3b7766276894d2fbb07e2047a171f9deb965de
    https://git.kernel.org/stable/c/d7286005e8fde0a430dc180a9f46c088c7d74483
    https://git.kernel.org/stable/c/fafa7450075f41d232bc785a4ebcbf16374f2076
    https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    https://cert-portal.siemens.com/productcert/html/ssa-032379.html
    https://cert-portal.siemens.com/productcert/html/ssa-089022.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High