UBUNTU-CVE-2023-53715

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    UBUNTU-CVE-2023-53715

    Published: 22 Oct 2025Last Modified: 8 Oct 2026
    Upstream:
    CVE-2023-53715

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex Apparently the hex passphrase mechanism does not work on newer chips/firmware (e.g. BCM4387). It seems there was a simple way of passing it in binary all along, so use that and avoid the hexification. OpenBSD has been doing it like this from the beginning, so this should work on all chips. Also clear the structure before setting the PMK. This was leaking uninitialized stack contents to the device.

    References: https://ubuntu.com/security/CVE-2023-53715, https://www.cve.org/CVERecord?id=CVE-2023-53715, https://git.kernel.org/linus/89b89e52153fda2733562776c7c9d9d3ebf8dd6d, https://git.kernel.org/stable/c/1687845eb8f37360a9ee849a3587ab659b090773, https://git.kernel.org/stable/c/2bc34facb90ceeff6f8c17d2006575a6d07c3825, https://git.kernel.org/stable/c/2fa3a5226b05e0a797c68b9609dcebe0cd236b27, https://git.kernel.org/stable/c/4e8dc0e5c7636efaadbd7e488acd34b4291c0431, https://git.kernel.org/stable/c/56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02, https://git.kernel.org/stable/c/89b89e52153fda2733562776c7c9d9d3ebf8dd6d, https://git.kernel.org/stable/c/e242c66f7ecfe8f5b6eb308f4ea464fd8589c866, https://git.kernel.org/stable/c/f8a6c53ff1d91acd5a20eb627edbffd816eb9a4e

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.11.0-12.19

    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
    UBUNTU-CVE-2023-53715 | CVE-DB