Linux Kernel up to 5.9-rc3 XFS File System buffer size

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.9-rc3 and classified as problematic. The affected element is an unknown function of the component XFS File System. The manipulation leads to buffer size. This vulnerability is referenced as CVE-2020-14385. The attack can only be performed from a local environment. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.9-rc3 (Operating System). This issue affects an unknown part of the component XFS File System. The manipulation with an unknown input leads to a buffer size vulnerability. Using CWE to declare the problem leads to CWE-131. The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow. Impacted is availability. The summary by CVE is:

A flaw was found in the Linux kernel before 5.9-rc4. A failure of the file system metadata validator in XFS can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt. This can lead to the filesystem being shutdown, or otherwise rendered inaccessible until it is remounted, leading to a denial of service. The highest threat from this vulnerability is to system availability.

The weakness was published 09/15/2020 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2020-14385 since 06/17/2020. Attacking locally is a requirement. A simple authentication is necessary for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.9-rc4 eliminates this vulnerability.

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Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer size
CWE: CWE-131 / CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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 5.9-rc4

Timelineinfo

06/17/2020 🔍
09/15/2020 +90 days 🔍
09/16/2020 +1 days 🔍
09/16/2020 +0 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2020-14385 (🔍)
GCVE (CVE): GCVE-0-2020-14385
GCVE (VulDB): GCVE-100-161255

Entryinfo

Created: 09/16/2020 07:39
Updated: 09/16/2020 07:44
Changes: 09/16/2020 07:39 (41), 09/16/2020 07:44 (12)
Complete: 🔍
Cache ID: 216::103

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