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CVE-2020-9391

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 25-02-2020 07:15
Last modified: - 18-04-2022 05:13
Total changes: - 3

Description

An issue was discovered in the Linux kernel 5.4 and 5.5 through 5.5.6 on the AArch64 architecture. It ignores the top byte in the address passed to the brk system call, potentially moving the memory break downwards when the application expects it to move upwards, aka CID-dcde237319e6. This has been observed to cause heap corruption with the GNU C Library malloc implementation.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Low
Attack complexity
Local
Attack vector
High
Availability
None
Confidentiality
None
Integrity
Low
Privileges required
Unchanged
Scope
None
User interaction
5.5
Base score
1.8
3.6
Exploitability score
Impact score
 

Verification logic

OR
OR
vendor=linux AND product=linux_kernel AND version=5.4
vendor=linux AND product=linux_kernel AND versionEndIncluding=5.5.6 AND versionStartIncluding=5.5
OR
vendor=fedoraproject AND product=fedora AND version=31
OR
vendor=netapp AND product=active_iq_unified_manager AND version=- AND target_software=vmware_vsphere
vendor=netapp AND product=cloud_backup AND version=-
vendor=netapp AND product=data_availability_services AND version=-
vendor=netapp AND product=hci_management_node AND version=-
vendor=netapp AND product=solidfire AND version=-
vendor=netapp AND product=steelstore_cloud_integrated_storage AND version=-
AND
OR
vendor=netapp AND product=h410c_firmware AND version=-
OR
vendor=netapp AND product=h410c AND version=-
 

Reference

 


Keywords

NVD

 

CVE-2020-9391

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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