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    CVE-2022-26495

    In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.

    Published:Mar 6, 2022
    Last Modified:Nov 21, 2024
    EPS:Mar 6, 2022
    EPSS Score:0.00333
    CVSS Score:9.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Network Block Device Project
    Product
    Network Block Device

    Exploits

    https://lists.debian.org/nbd/2022/01/msg00037.htmlhttps://lists.debian.org/nbd/2022/01/msg00037.html

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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    References

    https://lists.debian.org/debian-lts-announce/2022/03/msg00014.html
    https://lists.debian.org/nbd/2022/01/msg00037.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZHR73XMAJTCFGKUZRXVTZKCK2X3IFNA/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PU5JFD4PEJED72TZLZ5R2Q2SFXICU5I5/
    https://security.gentoo.org/glsa/202402-10
    https://sourceforge.net/projects/nbd/files/nbd/
    https://www.debian.org/security/2022/dsa-5100
    https://lists.debian.org/debian-lts-announce/2022/03/msg00014.html
    https://lists.debian.org/nbd/2022/01/msg00037.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZHR73XMAJTCFGKUZRXVTZKCK2X3IFNA/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PU5JFD4PEJED72TZLZ5R2Q2SFXICU5I5/
    https://security.gentoo.org/glsa/202402-10
    https://sourceforge.net/projects/nbd/files/nbd/
    https://www.debian.org/security/2022/dsa-5100

    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