UBUNTU-CVE-2024-26739

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    UBUNTU-CVE-2024-26739

    Published: 3 Apr 2024Last Modified: 8 Oct 2026
    Upstream:
    CVE-2024-26739
    Aliases:
    USN-7654-1
    USN-7654-2
    USN-7654-3

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: net/sched: act_mirred: don't override retval if we already lost the skb If we're redirecting the skb, and haven't called tcf_mirred_forward(), yet, we need to tell the core to drop the skb by setting the retcode to SHOT. If we have called tcf_mirred_forward(), however, the skb is out of our hands and returning SHOT will lead to UaF. Move the retval override to the error path which actually need it.

    References: https://ubuntu.com/security/CVE-2024-26739, https://git.kernel.org/linus/166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210, https://git.kernel.org/stable/c/28cdbbd38a4413b8eff53399b3f872fd4e80db9d, https://git.kernel.org/stable/c/f4e294bbdca8ac8757db436fc82214f3882fc7e7, https://git.kernel.org/stable/c/166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210, https://www.cve.org/CVERecord?id=CVE-2024-26739, https://ubuntu.com/security/notices/USN-7654-1, https://ubuntu.com/security/notices/USN-7654-2, https://ubuntu.com/security/notices/USN-7654-3, https://ubuntu.com/security/notices/USN-7655-1, https://ubuntu.com/security/notices/USN-7654-4, https://ubuntu.com/security/notices/USN-7654-5, https://ubuntu.com/security/notices/USN-7686-1, https://ubuntu.com/security/notices/USN-7711-1, https://ubuntu.com/security/notices/USN-7712-1, https://ubuntu.com/security/notices/USN-7712-2

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/linux-hwe-edge?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    4.8.0-28.30~16.04.1
    4.8.0-30.32~16.04.1
    4.8.0-32.34~16.04.1
    4.8.0-34.36~16.04.1

    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-2024-26739 | CVE-DB