CVE-2023-3777

    Dashboard / Vulnerabilities / CVE-2023-3777

    CVE-2023-3777

    Published: 6 Sept 2023Last Modified: 12 Aug 2026

    Summary: Use-after-free in Linux kernel's netfilter: nf_tables component

    Details: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances. We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.

    References: http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html, http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html, https://git.kernel.org, https://kernel.dance/6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3777.json, https://nvd.nist.gov/vuln/detail/CVE-2023-3777, https://www.debian.org/security/2023/dsa-5492, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- bbf5c979011a099af5dc76498918ed7df445635b
    Fixed -2dde18cd1d8fac735875f2e4987f11817cc0bc2c

    Affected versions

    v6.5-rc1

    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
    CVE-2023-3777 | CVE-DB