UBUNTU-CVE-2024-35887

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    UBUNTU-CVE-2024-35887

    Published: 19 May 2024Last Modified: 21 Sept 2026
    Upstream:
    CVE-2024-35887
    Aliases:
    USN-6893-1
    USN-6893-2
    USN-6893-3

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: ax25: fix use-after-free bugs caused by ax25_ds_del_timer When the ax25 device is detaching, the ax25_dev_device_down() calls ax25_ds_del_timer() to cleanup the slave_timer. When the timer handler is running, the ax25_ds_del_timer() that calls del_timer() in it will return directly. As a result, the use-after-free bugs could happen, one of the scenarios is shown below: (Thread 1) | (Thread 2) | ax25_ds_timeout() ax25_dev_device_down() | ax25_ds_del_timer() | del_timer() | ax25_dev_put() //FREE | | ax25_dev-> //USE In order to mitigate bugs, when the device is detaching, use timer_shutdown_sync() to stop the timer.

    References: https://ubuntu.com/security/CVE-2024-35887, https://www.cve.org/CVERecord?id=CVE-2024-35887, https://git.kernel.org/linus/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89, https://git.kernel.org/stable/c/74204bf9050f7627aead9875fe4e07ba125cb19b, https://git.kernel.org/stable/c/c6a368f9c7af4c14b14d390c2543af8001c9bdb9, https://git.kernel.org/stable/c/fd819ad3ecf6f3c232a06b27423ce9ed8c20da89, https://ubuntu.com/security/notices/USN-6893-1, https://ubuntu.com/security/notices/USN-6893-2, https://ubuntu.com/security/notices/USN-6893-3, https://ubuntu.com/security/notices/USN-6918-1, https://ubuntu.com/security/notices/USN-7288-1, https://ubuntu.com/security/notices/USN-7289-1, https://ubuntu.com/security/notices/USN-7291-1, https://ubuntu.com/security/notices/USN-7288-2, https://ubuntu.com/security/notices/USN-7289-2, https://ubuntu.com/security/notices/USN-7293-1, https://ubuntu.com/security/notices/USN-7294-1, https://ubuntu.com/security/notices/USN-7295-1, https://ubuntu.com/security/notices/USN-7289-3, https://ubuntu.com/security/notices/USN-7305-1, https://ubuntu.com/security/notices/USN-7289-4, https://ubuntu.com/security/notices/USN-7308-1, https://ubuntu.com/security/notices/USN-7294-2, https://ubuntu.com/security/notices/USN-7294-3, https://ubuntu.com/security/notices/USN-7294-4, https://ubuntu.com/security/notices/USN-7331-1, https://ubuntu.com/security/notices/USN-7388-1, https://ubuntu.com/security/notices/USN-7389-1, https://ubuntu.com/security/notices/USN-7390-1, https://ubuntu.com/security/notices/USN-7393-1, https://ubuntu.com/security/notices/USN-7401-1, https://ubuntu.com/security/notices/USN-7413-1, https://ubuntu.com/security/notices/USN-7458-1, https://ubuntu.com/security/notices/USN-7539-1, https://ubuntu.com/security/notices/USN-7540-1

    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-2024-35887 | CVE-DB