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CVE
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CVE-2020-25212Date: (C)2020-09-10   (M)2024-04-17


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.0CVSS Score : 4.4
Exploit Score: 1.0Exploit Score: 3.4
Impact Score: 5.9Impact Score: 6.4
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: HIGHAccess Complexity: MEDIUM
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: HIGHAvailability: PARTIAL
Integrity: HIGH 
Availability: HIGH 
  
Reference:
USN-4525-1
USN-4527-1
USN-4578-1
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.3
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4487b93545214a9db8cbf32e86411677b0cca21
https://twitter.com/grsecurity/status/1303370421958578179
openSUSE-SU-2020:1655
openSUSE-SU-2020:1682
openSUSE-SU-2020:1698

CPE    3
cpe:/o:debian:debian_linux:9.0
cpe:/o:canonical:ubuntu_linux:18.04::~~lts~~~
cpe:/o:linux:linux_kernel
CWE    1
CWE-787
OVAL    34
oval:org.secpod.oval:def:506091
oval:org.secpod.oval:def:705694
oval:org.secpod.oval:def:67172
oval:org.secpod.oval:def:89002959
...

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