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CVE-2021-38199

Date: August 8, 2021

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.

Severity Score

Related Resources (11)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-38199
https://nvd.nist.gov/vuln/detail/CVE-2021-38199
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
https://github.com/torvalds/linux/commit/dd99e9f98fbf423ff6d365b37a98e8879170f17c
https://access.redhat.com/security/cve/CVE-2021-38199
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
https://www.debian.org/security/2021/dsa-4978
https://security.netapp.com/advisory/ntap-20210902-0010/
https://security-tracker.debian.org/tracker/CVE-2021-38199
https://www.mend.io/vulnerability-database/CVE-2021-38199

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): ADJACENT
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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