OESA-2021-1336

    Dashboard / Vulnerabilities / OESA-2021-1336

    OESA-2021-1336

    Published: 6 Sept 2021Last Modified: 18 Aug 2026
    Upstream:
    CVE-2021-3640

    Summary: kernel security update

    Details: he Linux Kernel, the operating system core itself. Security Fix(es): A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.(CVE-2021-3640)

    References: https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1336, https://nvd.nist.gov/vuln/detail/CVE-2021-3640

    Affected packages

    Package

    Name: kernel

    Purl: pkg:rpm/openEuler/kernel&distro=openEuler-20.03-LTS-SP1

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.19.90-2109.1.0.0108.oe1

    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
    OESA-2021-1336 | CVE-DB