CVE Vulnerability

CVE-2020-25212

A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452.

4.4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

7 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.3 Mailing List Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4487b93545214a9db8cbf32e86411677b0cca21 Mailing List Patch
https://twitter.com/grsecurity/status/1303370421958578179 Third Party Advisory
https://usn.ubuntu.com/4527-1/ Third Party Advisory
https://usn.ubuntu.com/4525-1/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html Mailing List Third Party Advisory
https://usn.ubuntu.com/4578-1/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
Information

Published : 2020-09-09 04:15

Updated : 2022-04-28 06:32

NVD link : CVE-2020-25212

Mitre link : CVE-2020-25212

Products Affected
No products.
CWE
CWE-367

CWE-787