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    CVE-2024-36953

    In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-v2: Check for non-NULL vCPU in vgic_v2_parse_attr() vgic_v2_parse_attr() is responsible for finding the vCPU that matches the user-provided CPUID, which (of course) may not be valid. If the ID is invalid, kvm_get_vcpu_by_id() returns NULL, which isn't handled gracefully. Similar to the GICv3 uaccess flow, check that kvm_get_vcpu_by_id() actually returns something and fail the ioctl if not.

    Published:May 30, 2024
    Last Modified:Dec 23, 2025
    EPS:May 30, 2024
    EPSS Score:0.00016
    CVSS Score:4.4

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-52 Embedding NULL Bytes
    CAPEC-53 Postfix, Null Terminate, and Backslash

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    References

    https://git.kernel.org/stable/c/01981276d64e542c177b243f7c979fee855d5487
    https://git.kernel.org/stable/c/17db92da8be5dd3bf63c01f4109fe47db64fc66f
    https://git.kernel.org/stable/c/3a5b0378ac6776c7c31b18e0f3c1389bd6005e80
    https://git.kernel.org/stable/c/4404465a1bee3607ad90a4c5f9e16dfd75b85728
    https://git.kernel.org/stable/c/6ddb4f372fc63210034b903d96ebbeb3c7195adb
    https://git.kernel.org/stable/c/8d6a1c8e3de36cb0f5e866f1a582b00939e23104
    https://git.kernel.org/stable/c/01981276d64e542c177b243f7c979fee855d5487
    https://git.kernel.org/stable/c/17db92da8be5dd3bf63c01f4109fe47db64fc66f
    https://git.kernel.org/stable/c/3a5b0378ac6776c7c31b18e0f3c1389bd6005e80
    https://git.kernel.org/stable/c/4404465a1bee3607ad90a4c5f9e16dfd75b85728
    https://git.kernel.org/stable/c/6ddb4f372fc63210034b903d96ebbeb3c7195adb
    https://git.kernel.org/stable/c/8d6a1c8e3de36cb0f5e866f1a582b00939e23104
    https://lists.debian.org/debian-lts-announce/2024/06/msg00019.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