CVE-2021-38199

    Dashboard / Vulnerabilities / CVE-2021-38199

    CVE-2021-38199

    Published: 8 Aug 2021Last Modified: 11 Apr 2026

    Summary:

    Details: fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.

    References: https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html, https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html, https://security.netapp.com/advisory/ntap-20210902-0010/, https://www.debian.org/security/2021/dsa-4978, https://github.com/torvalds/linux/commit/dd99e9f98fbf423ff6d365b37a98e8879170f17c, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -dd99e9f98fbf423ff6d365b37a98e8879170f17c

    Affected versions

    v2.6.12-rc2
    v2.6.12-rc3
    v2.6.12-rc4
    v2.6.13
    v2.6.13-rc1
    v2.6.13-rc2
    v2.6.13-rc3
    v2.6.13-rc4
    v2.6.13-rc5
    v2.6.13-rc6
    v2.6.13-rc7
    v2.6.14-rc1
    v2.6.14-rc2
    v2.6.14-rc3
    v2.6.15-rc1
    v2.6.15-rc2
    v2.6.15-rc4
    v2.6.15-rc5
    v2.6.15-rc7
    v2.6.16
    v2.6.16-rc1
    v2.6.16-rc2
    v2.6.16-rc3
    v2.6.16-rc4
    v2.6.16-rc5
    v2.6.16-rc6
    v2.6.17
    v2.6.17-rc1
    v2.6.17-rc2
    v2.6.17-rc3
    v2.6.17-rc4
    v2.6.17-rc5
    v2.6.17-rc6
    v2.6.18
    v2.6.18-rc1
    v2.6.18-rc2
    v2.6.18-rc3
    v2.6.18-rc5
    v2.6.18-rc6
    v2.6.19-rc1
    v2.6.19-rc2
    v2.6.20-rc1
    v2.6.20-rc2
    v2.6.20-rc3
    v2.6.20-rc4
    v2.6.20-rc5
    v2.6.20-rc6
    v2.6.20-rc7
    v2.6.21
    v2.6.21-rc1
    v2.6.21-rc2
    v2.6.21-rc3
    v2.6.21-rc4
    v2.6.21-rc5
    v2.6.21-rc6
    v2.6.21-rc7
    v2.6.22
    v2.6.22-rc1
    v2.6.22-rc2
    v2.6.22-rc3
    v2.6.22-rc4
    v2.6.22-rc5
    v2.6.22-rc6
    v2.6.22-rc7
    v2.6.23
    v2.6.23-rc1
    v2.6.23-rc2
    v2.6.23-rc3
    v2.6.23-rc4
    v2.6.23-rc5
    v2.6.23-rc6
    v2.6.23-rc7
    v2.6.23-rc8
    v2.6.23-rc9
    v2.6.24
    v2.6.24-rc1
    v2.6.24-rc2
    v2.6.24-rc3
    v2.6.24-rc4
    v2.6.24-rc5
    v2.6.24-rc6
    v2.6.24-rc7
    v2.6.24-rc8
    v2.6.25
    v2.6.25-rc1
    v2.6.25-rc2
    v2.6.25-rc3
    v2.6.25-rc4
    v2.6.25-rc5
    v2.6.25-rc6
    v2.6.25-rc7
    v2.6.25-rc8
    v2.6.25-rc9
    v2.6.26
    v2.6.26-rc1
    v2.6.26-rc2
    v2.6.26-rc3
    v2.6.26-rc4
    v2.6.26-rc5
    v2.6.26-rc6
    v2.6.26-rc7
    v2.6.26-rc8
    v2.6.26-rc9
    v2.6.27
    v2.6.27-rc1
    v2.6.27-rc2
    v2.6.27-rc3
    v2.6.27-rc4
    v2.6.27-rc5
    v2.6.27-rc6
    v2.6.27-rc7
    v2.6.27-rc8
    v2.6.27-rc9
    v2.6.28
    v2.6.28-rc1
    v2.6.28-rc2
    v2.6.28-rc3
    v2.6.28-rc4
    v2.6.28-rc5
    v2.6.28-rc6
    v2.6.28-rc7
    v2.6.28-rc8
    v2.6.28-rc9
    v2.6.29
    v2.6.29-rc1
    v2.6.29-rc2
    v2.6.29-rc3
    v2.6.29-rc4
    v2.6.29-rc5
    v2.6.29-rc6
    v2.6.29-rc7
    v2.6.29-rc8
    v2.6.30
    v2.6.30-rc1
    v2.6.30-rc2
    v2.6.30-rc3
    v2.6.30-rc4
    v2.6.30-rc5
    v2.6.30-rc6
    v2.6.30-rc7
    v2.6.30-rc8
    v2.6.31
    v2.6.31-rc1
    v2.6.31-rc2
    v2.6.31-rc3
    v2.6.31-rc4
    v2.6.31-rc5
    v2.6.31-rc6
    v2.6.31-rc7
    v2.6.31-rc8
    v2.6.31-rc9
    v2.6.32
    v2.6.32-rc1
    v2.6.32-rc2
    v2.6.32-rc3
    v2.6.32-rc4
    v2.6.32-rc5
    v2.6.32-rc6
    v2.6.32-rc7
    v2.6.32-rc8
    v2.6.33
    v2.6.33-rc1
    v2.6.33-rc2
    v2.6.33-rc3
    v2.6.33-rc4
    v2.6.33-rc5
    v2.6.33-rc6
    v2.6.33-rc7
    v2.6.33-rc8
    v2.6.34
    v2.6.34-rc1
    v2.6.34-rc2
    v2.6.34-rc3
    v2.6.34-rc4
    v2.6.34-rc5
    v2.6.34-rc6
    v2.6.34-rc7
    v2.6.35
    v2.6.35-rc1
    v2.6.35-rc2
    v2.6.35-rc3
    v2.6.35-rc4
    v2.6.35-rc5
    v2.6.35-rc6
    v2.6.36
    v2.6.36-rc1
    v2.6.36-rc2
    v2.6.36-rc3
    v2.6.36-rc4
    v2.6.36-rc5
    v2.6.36-rc6
    v2.6.36-rc7
    v2.6.36-rc8
    v2.6.37
    v2.6.37-rc1
    v2.6.37-rc2
    v2.6.37-rc3
    v2.6.37-rc4
    v2.6.37-rc5
    v2.6.37-rc6
    v2.6.37-rc7
    v2.6.37-rc8
    v2.6.38
    v2.6.38-rc1
    v2.6.38-rc2
    v2.6.38-rc3
    v2.6.38-rc4
    v2.6.38-rc5
    v2.6.38-rc6
    v2.6.38-rc7
    v2.6.38-rc8
    v2.6.39
    v2.6.39-rc1
    v2.6.39-rc2
    v2.6.39-rc3
    v2.6.39-rc4
    v2.6.39-rc5
    v2.6.39-rc6
    v2.6.39-rc7

    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
    CVE-2021-38199 | CVE-DB