CVE-2018-19854

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    CVE-2018-19854

    Published: 4 Dec 2018Last Modified: 15 Mar 2026

    Summary:

    Details: An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option).

    References: https://access.redhat.com/errata/RHSA-2019:3309, https://access.redhat.com/errata/RHSA-2019:3517, https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3, https://usn.ubuntu.com/3872-1/, https://usn.ubuntu.com/3878-1/, https://usn.ubuntu.com/3878-2/, https://usn.ubuntu.com/3901-1/, https://usn.ubuntu.com/3901-2/, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087, https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f087

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    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