CVE-2026-80865

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    CVE-2026-80865

    Published: 4 Sept 2026Last Modified: 6 Sept 2026

    Summary: bpf: Add missing access_ok call to copy_user_syms

    Details: In the Linux kernel, the following vulnerability has been resolved: bpf: Add missing access_ok call to copy_user_syms As reported by sashiko we use __get_user without prior access_ok call on the user space pointer. Adding the missing call for the whole pointer array. Plus removing the err check in the error path, because it's not needed and also we can return -ENOMEM directly from the first kvmalloc_array fail path. [1] https://lore.kernel.org/bpf/[email protected]/

    References: https://git.kernel.org/stable/c/0b6252afcd1965f77c6a6f8a802a2e1381822b98, https://git.kernel.org/stable/c/128391b57e0977c35243672a6f970073651f3831, https://git.kernel.org/stable/c/28ce7bcf8a29aa395b60764df4c97be745de89d0, https://git.kernel.org/stable/c/8b719cef5ac30ab83ce5693c5faf10e4944874af, https://git.kernel.org/stable/c/a67f7f9647cb243b3be32163e88e5bc76e3d51e9, https://git.kernel.org/stable/c/d5dc200c3a3f217de072af269dd90adddf90e48d, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80865.json, https://nvd.nist.gov/vuln/detail/CVE-2026-80865, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0236fec57a15dc2a068dfe4488e0c2ab4559b1ec
    Fixed -a67f7f9647cb243b3be32163e88e5bc76e3d51e9

    Affected versions

    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-2026-80865 | CVE-DB