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CVE-2021-3501

Out-of-bounds write in Linux Kernel

CVSS score

7.1

EPSS probability

%0.4

Risk score

0.0

Published

5 y ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

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Vulnerability description

DayBreach CVE AI Research

CVE-2021-3501 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2021-3501 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1linuxKernel View
2linuxlinux kernel View
3redhatenterprise linux View
4redhatenterprise linux for real time View
5redhatenterprise linux for real time for nfv View
6redhatenterprise linux for real time for nfv tus View
7redhatenterprise linux for real time tus View
8fedoraprojectfedora View
9redhatvirtualization View
10redhatvirtualization host View
11netappcloud backup View
12netappsolidfire baseboard management controller firmware View
13netapph300s firmware View
14netapph300s View
15netapph500s firmware View
16netapph500s View
17netapph700s firmware View
18netapph700s View
19netapph300e firmware View
20netapph300e View
21netapph500e firmware View
22netapph500e View
23netapph700e firmware View
24netapph700e View
25netapph410s firmware View
26netapph410s View
27netapph410c firmware View
28netapph410c View
Total affected vendors: 4|Products: 28

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.1CVSS V31HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:HNVD
3.6CVSS V2—AV:L/AC:L/Au:N/C:N/I:P/A:PNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

nvd

NVD tarafından Patch olarak etiketlenmiş referans

Open source
nvd

NVD tarafından Patch olarak etiketlenmiş referans

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-3501 is associated with the following CWEs:

CWE-787: Out-of-bounds Write

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-3501 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

https://bugzilla.redhat.com/show_bug.cgi?id=1950136vendor-advisoryhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c4f2ee3f68c9a4bf1653d15f1a9a435ae33f7avendor-advisoryhttps://security.netapp.com/advisory/ntap-20210618-0008/vendor-advisory

CVSS Vector Radar Chart

7.1 / 10
Attack VectorLocalComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

L
linux logo
linux
R
redhat logo
redhat
F
fedoraproject logo
fedoraproject
N
netapp logo
netapp

Weakness Type (CWE & CAPEC)

CWE-787

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