UBUNTU-CVE-2021-46949

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    UBUNTU-CVE-2021-46949

    Published: 27 Feb 2024Last Modified: 24 Oct 2025
    Upstream:
    CVE-2021-46949

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: sfc: farch: fix TX queue lookup in TX flush done handling We're starting from a TXQ instance number ('qid'), not a TXQ type, so efx_get_tx_queue() is inappropriate (and could return NULL, leading to panics).

    References: https://ubuntu.com/security/CVE-2021-46949, https://git.kernel.org/linus/5b1faa92289b53cad654123ed2bc8e10f6ddd4ac, https://git.kernel.org/stable/c/fb791572d6747ef385f628450f8d57cd132e6e5a, https://git.kernel.org/stable/c/a1570985ec04116cc665b760faf666a104154170, https://git.kernel.org/stable/c/98d91180748986bfb6dfb3e72765f3225719a647, https://git.kernel.org/stable/c/5b1faa92289b53cad654123ed2bc8e10f6ddd4ac, https://www.cve.org/CVERecord?id=CVE-2021-46949

    Affected packages

    Package

    Name: linux-hwe-edge

    Purl: pkg:deb/ubuntu/[email protected]~16.04.1?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-2021-46949 | CVE-DB