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    CVE-2023-1281

    Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.

    Published:Feb 23, 2023
    Last Modified:Jul 30, 2026
    EPS:Mar 22, 2023
    EPSS Score:0.00308
    CVSS Score:7.8

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Tus
    Vendor
    Redhat
    Product
    Rhev Hypervisor

    Exploits

    https://github.com/lanleft/CVE-2023-1281

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://www.openwall.com/lists/oss-security/2023/04/11/3
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee059170b1f7e94e55fa6cadee544e176a6e59c2
    https://kernel.dance/#ee059170b1f7e94e55fa6cadee544e176a6e59c2
    https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
    https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
    https://security.netapp.com/advisory/ntap-20230427-0004/
    http://www.openwall.com/lists/oss-security/2023/04/11/3
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee059170b1f7e94e55fa6cadee544e176a6e59c2
    https://kernel.dance/#ee059170b1f7e94e55fa6cadee544e176a6e59c2
    https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
    https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
    https://security.netapp.com/advisory/ntap-20230427-0004/

    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