High severity · published May 6, 2021
CVE-2021-3501
A flaw was found in the Linux kernel in versions before 5.12
7.1
CVSS
0.4%
EPSS
No
On KEV
Description
A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API, is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before 5.12 · source: NVD
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
EL
Enterprise Linux For Real Time · Redhat
8 · source: NVD
EL
Enterprise Linux For Real Time For Nfv · Redhat
8 · source: NVD
EL
Enterprise Linux For Real Time For Nfv Tus · Redhat
8.4 · source: NVD
EL
Enterprise Linux For Real Time Tus · Redhat
8.4 · source: NVD
FE
Fedora · Fedoraproject
33 · source: NVD
HF
H300e Firmware · Netapp
All versions, or not specified · source: NVD
HF
H300s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410c Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410s Firmware · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3501
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3501
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1950136
Mailing List
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7a
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210618-0008/
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