BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2021
CVE-2021-0512High confidence

In __hidinput_change_resolution_multipliers of hid-input.c, there is a possible out of bounds write due to a heap buffer overflow

Unknown · Android

7.8HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Medium, lowered one band.downgradedsince 3 Aug 2024

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.28% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Unknown Android and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 1 affected package state shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.10.19-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.10.19-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.10.19-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.10.19-1Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

2 current
CVE-2021-0512 · CSAF 2.0 · revision 45 · interimSUSE Product Security TeamCVE-2021-0512
12 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SLES 15 SP1 CHOST Images for Amazon EC2
  • SLES 15 SP2 CHOST Images for Amazon EC2
  • SLES 15 SP4 CHOST Images for Amazon EC2
  • SLES 15 SP5 CHOST Images for Amazon EC2
  • SLES 15 SP1 CHOST Images for Google
  • SLES 15 SP2 CHOST Images for Google
  • SLES 15 SP4 CHOST Images for Google
  • SLES 15 SP5 CHOST Images for Google
  • SLES 15 SP1 CHOST Images for Microsoft Azure
  • SLES 15 SP2 CHOST Images for Microsoft Azure
  • SLES 15 SP4 CHOST Images for Microsoft Azure
  • SLES 15 SP5 CHOST Images for Microsoft Azure
Summary
In __hidinput_change_resolution_multipliers of hid-input.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-173843328References: Upstream kernel
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
SSA-770721 · CSAF 2.0 · revision 1 · interimSiemens ProductCERTSSA-770721: Multiple Vulnerabilities in SIMATIC RF160B before V2.2
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC RF160B (6GT2003-0FA00)
Summary
In __hidinput_change_resolution_multipliers of hid-input.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-173843328References: Upstream kernel
Remediation
Update to V2.2 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2021-3131

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

In __hidinput_change_resolution_multipliers of hid-input.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-173843328References: Upstream kernel

What

In __hidinput_change_resolution_multipliers of hid-input.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-173843328References: Upstream kernel

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In __hidinput_change_resolution_multipliers of hid-input.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-173843328References: Upstream kernel

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Out-of-bounds Write → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-787 ↗

CWE-787: Out-of-bounds Write. The product writes data past the end, or before the beginning, of the intended buffer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-787
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

Cyber Security Agency of Singapore · English · CSA-SB-20210623Security Bulletin 23 Jun 2021

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 23 Jun 2021, published on 23 June 2021. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0203Multiples vulnérabilités dans les produits Siemens

.cve.org/CVERecord?id=CVE-2021-0480 Référence CVE CVE-2021-0481 https://www.cve.org/CVERecord?id=CVE-2021-0481 Référence CVE CVE-2021-0484 https://www.cve.org/CVERecord?id=CVE-2021-0484 Référence CVE CVE-2021-0506 https://www.cve.org/CVERecord?id=CVE-2021-0506 Référence CVE CVE-2021-0507 https://www.cve.org/CVERecord?id=CVE-2021-0507 Référence CVE CVE-2021-0508 https://www.cve.org/CVERecord?id=CVE-2021-0508 Référence CVE CVE-2021-0509 https://www.cve.org/CVERecord?id=CVE-2021-0509 Référence CVE CVE-2021-0510 https://www.cve.org/CVERecord?id=CVE-2021-0510 Référence CVE CVE-2021-0511 https://www.cve.org/CVERecord?id=CVE-2021-0511 Référence CVE CVE-2021-0512 https://www.cve.org/CVERecord?id=CVE-2021-0512 Référence CVE CVE-2021-0513 https://www.cve.org/CVERecord?id=CVE-2021-0513 Référence CVE CVE-2021-0514 https://www.cve.org/CVERecord?id=CVE-2021-0514 Référence CVE CVE-2021-0515 https://www.cve.org/CVERecord?id=CVE-2021-0515 Référence CVE CVE-2021-0516 https://www.cve.org/CVERecord?id=CVE-2021-0516 Référence CVE CVE-2021-0519 https://www.cve.org/CVERecord?id=CVE-2021-0519 Référence CVE CVE-2021-0520 https://www.cve.org/CVERecord?id=CVE-2021-0520 Référence CVE CVE-2021-0521 https://www.cve.org/CVERecord?id=CVE-2021-0521 Référence CVE CVE-2021-0522 https://www.cve.org/CVERecord?id=CVE-2021-0522 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-841Multiples vulnérabilités dans le noyau Linux de Red Hat

De multiples vulnérabilités ont été découvertes dans le noyau Linux de Red Hat. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service, un contournement de la politique de sécurité et une atteinte à l'intégrité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-680Multiples vulnérabilités dans le noyau Linux de Red Hat

De multiples vulnérabilités ont été découvertes dans le noyau Linux de Red Hat. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à l'intégrité des données et une atteinte à la confidentialité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-570Multiples vulnérabilités dans le noyau Linux de SUSE

ord?id=CVE-2020-24588 Référence CVE CVE-2020-26139 https://www.cve.org/CVERecord?id=CVE-2020-26139 Référence CVE CVE-2020-26141 https://www.cve.org/CVERecord?id=CVE-2020-26141 Référence CVE CVE-2020-26145 https://www.cve.org/CVERecord?id=CVE-2020-26145 Référence CVE CVE-2020-26147 https://www.cve.org/CVERecord?id=CVE-2020-26147 Référence CVE CVE-2020-26558 https://www.cve.org/CVERecord?id=CVE-2020-26558 Référence CVE CVE-2020-36385 https://www.cve.org/CVERecord?id=CVE-2020-36385 Référence CVE CVE-2020-36386 https://www.cve.org/CVERecord?id=CVE-2020-36386 Référence CVE CVE-2021-0129 https://www.cve.org/CVERecord?id=CVE-2021-0129 Référence CVE CVE-2021-0512 https://www.cve.org/CVERecord?id=CVE-2021-0512 Référence CVE CVE-2021-0605 https://www.cve.org/CVERecord?id=CVE-2021-0605 Référence CVE CVE-2021-22555 https://www.cve.org/CVERecord?id=CVE-2021-22555 Référence CVE CVE-2021-23133 https://www.cve.org/CVERecord?id=CVE-2021-23133 Référence CVE CVE-2021-23134 https://www.cve.org/CVERecord?id=CVE-2021-23134 Référence CVE CVE-2021-32399 https://www.cve.org/CVERecord?id=CVE-2021-32399 Référence CVE CVE-2021-33034 https://www.cve.org/CVERecord?id=CVE-2021-33034 Référence CVE CVE-2021-33909 https://www.cve.org/CVERecord?id=CVE-2021-33909 Référence CVE CVE-2021-34693 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-563Multiples vulnérabilités dans le noyau Linux de SUSE

ord?id=CVE-2020-24588 Référence CVE CVE-2020-26139 https://www.cve.org/CVERecord?id=CVE-2020-26139 Référence CVE CVE-2020-26141 https://www.cve.org/CVERecord?id=CVE-2020-26141 Référence CVE CVE-2020-26145 https://www.cve.org/CVERecord?id=CVE-2020-26145 Référence CVE CVE-2020-26147 https://www.cve.org/CVERecord?id=CVE-2020-26147 Référence CVE CVE-2020-26558 https://www.cve.org/CVERecord?id=CVE-2020-26558 Référence CVE CVE-2020-36385 https://www.cve.org/CVERecord?id=CVE-2020-36385 Référence CVE CVE-2020-36386 https://www.cve.org/CVERecord?id=CVE-2020-36386 Référence CVE CVE-2021-0129 https://www.cve.org/CVERecord?id=CVE-2021-0129 Référence CVE CVE-2021-0512 https://www.cve.org/CVERecord?id=CVE-2021-0512 Référence CVE CVE-2021-0605 https://www.cve.org/CVERecord?id=CVE-2021-0605 Référence CVE CVE-2021-22555 https://www.cve.org/CVERecord?id=CVE-2021-22555 Référence CVE CVE-2021-23133 https://www.cve.org/CVERecord?id=CVE-2021-23133 Référence CVE CVE-2021-23134 https://www.cve.org/CVERecord?id=CVE-2021-23134 Référence CVE CVE-2021-32399 https://www.cve.org/CVERecord?id=CVE-2021-32399 Référence CVE CVE-2021-33034 https://www.cve.org/CVERecord?id=CVE-2021-33034 Référence CVE CVE-2021-33200 https://www.cve.org/CVERecord?id=CVE-2021-33200 Référence CVE CVE-2021-33624 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-535Multiples vulnérabilités dans le noyau Linux de SUSE

De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, un contournement de la politique de sécurité et une atteinte à l'intégrité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-441Multiples vulnérabilités dans Google Android

.cve.org/CVERecord?id=CVE-2021-0478 Référence CVE CVE-2021-0504 https://www.cve.org/CVERecord?id=CVE-2021-0504 Référence CVE CVE-2021-0505 https://www.cve.org/CVERecord?id=CVE-2021-0505 Référence CVE CVE-2021-0506 https://www.cve.org/CVERecord?id=CVE-2021-0506 Référence CVE CVE-2021-0507 https://www.cve.org/CVERecord?id=CVE-2021-0507 Référence CVE CVE-2021-0508 https://www.cve.org/CVERecord?id=CVE-2021-0508 Référence CVE CVE-2021-0509 https://www.cve.org/CVERecord?id=CVE-2021-0509 Référence CVE CVE-2021-0510 https://www.cve.org/CVERecord?id=CVE-2021-0510 Référence CVE CVE-2021-0511 https://www.cve.org/CVERecord?id=CVE-2021-0511 Référence CVE CVE-2021-0512 https://www.cve.org/CVERecord?id=CVE-2021-0512 Référence CVE CVE-2021-0513 https://www.cve.org/CVERecord?id=CVE-2021-0513 Référence CVE CVE-2021-0516 https://www.cve.org/CVERecord?id=CVE-2021-0516 Référence CVE CVE-2021-0517 https://www.cve.org/CVERecord?id=CVE-2021-0517 Référence CVE CVE-2021-0520 https://www.cve.org/CVERecord?id=CVE-2021-0520 Référence CVE CVE-2021-0521 https://www.cve.org/CVERecord?id=CVE-2021-0521 Référence CVE CVE-2021-0522 https://www.cve.org/CVERecord?id=CVE-2021-0522 Référence CVE CVE-2021-0523 https://www.cve.org/CVERecord?id=CVE-2021-0523 Référence CVE CVE-2021-0525 https://www.cve.org/CVERecord?id=CVE-2021-0525 Ré

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2021-008185Android のカーネルにおける境界外書き込みに関する脆弱性

Android のカーネルには、境界外書き込みに関する脆弱性が存在します。 本脆弱性は、Android ID: A-173843328 として公開されています。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 21 Jun 2021 · Last source change 3 Aug 2024, 15:40 UTC · CWE-787 · Out-of-bounds Write

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2021-3131
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2021-3131↗Vendor CSAF · SUSE Product Security Team↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2021-0512 · cve.blacktree.nl