Linux Kernel up to 5.13.3 NFS net/sunrpc/xdr.c xdr_set_page_base denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.13.3 (Operating System). This affects the function xdr_set_page_base of the file net/sunrpc/xdr.c of the component NFS Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was presented 08/09/2021 as 6d1c0f3d28f98ea2736128ed3e46821496dc3a8c. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2021-38201. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 5.13.4 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

See VDB-180295, VDB-180362, VDB-180364 and VDB-180367 for similar entries.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.13.4
Patch: github.com

Timelineinfo

08/08/2021 🔍
08/09/2021 +1 days 🔍
08/09/2021 +0 days 🔍
08/14/2021 +5 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 6d1c0f3d28f98ea2736128ed3e46821496dc3a8c
Status: Confirmed

CVE: CVE-2021-38201 (🔍)
See also: 🔍

Entryinfo

Created: 08/09/2021 07:03
Updated: 08/14/2021 09:44
Changes: 08/09/2021 07:03 (45), 08/14/2021 09:40 (2), 08/14/2021 09:44 (18)
Complete: 🔍
Cache ID: 3:6EC:103

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