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    CVE-2022-2503

    Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5

    Published:Aug 12, 2022
    Last Modified:Apr 21, 2025
    EPS:Aug 12, 2022
    EPSS Score:0.00004
    CVSS Score:6.9

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhev Hypervisor

    Exploits

    https://github.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63mhttps://github.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63m

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-10 Buffer Overflow via Environment Variables
    CAPEC-114 Authentication Abuse
    CAPEC-115 Authentication Bypass
    CAPEC-127 Directory Indexing
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-151 Identity Spoofing
    CAPEC-194 Fake the Source of Data
    CAPEC-21 Exploitation of Trusted Identifiers
    CAPEC-22 Exploiting Trust in Client
    CAPEC-274 HTTP Verb Tampering
    CAPEC-31 Accessing/Intercepting/Modifying HTTP Cookies
    CAPEC-39 Manipulating Opaque Client-based Data Tokens
    CAPEC-45 Buffer Overflow via Symbolic Links
    CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
    CAPEC-593 Session Hijacking
    CAPEC-633 Token Impersonation
    CAPEC-650 Upload a Web Shell to a Web Server
    CAPEC-665 Exploitation of Thunderbolt Protection Flaws
    CAPEC-77 Manipulating User-Controlled Variables
    CAPEC-94 Adversary in the Middle (AiTM)

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    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