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Threats / Samsung / CVE-2021-25370
CVE-2021-25370 · EUVD no mirror located · GCVE no mirror located Verified 2026-06-22

Samsung Mobile Devices vulnerability

Samsung mobile devices with Mali GPU contain a use-after-free vulnerability in the DPU driver due to incorrect file descriptor handling, causing memory corruption and kernel panic. Exploited in the wild and chained with related CVEs.

Verdict

Today item — known-exploited.

A use-after-free flaw in Samsung mobile GPU drivers allows local attackers to trigger kernel panic through memory corruption. The vulnerability has been actively exploited and is typically chained with companion CVEs for broader impact.

CISA KEV Yes · 2022-11-083EPSS 0.0089 (verify live)4
01

Is it exploitable?

— the evidence, ranked above the score
Reported exploitation
2 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
docs.google.com ↗cisa.gov ↗Confirmed
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-11-08).
CISA KEV ↗Confirmed
Probability (EPSS)
EPSS 0.0089 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
FIRST EPSS ↗High
Severity / affected
Affected: Samsung, Mobile Devices. Confirm exact fixed builds in the vendor advisory.
NVD ↗Reported
Weakness (CWE)
Mapped to CWE-416 Use After Free — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
NVD ↗Reported
WeaknessCWE-416 · Use After FreeMemory safety
02

Who’s exploiting it?

— attribution turns risk into urgency
Attribution not established

No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.

03

Why it matters

— the attack path, told twice: adversary, then board
1

Front door — unauthenticated access narrative 1

Attacker
Gain local code execution context on the target device to interact with the DPU driver.
Business
Device availability compromised through kernel panic and potential system crash.
2

Keys to the kingdom — privilege/identity takeover narrative 2

Attacker
Trigger memory corruption by manipulating file descriptor state in the GPU driver.
Business
User experience degradation and support costs from widespread device instability.
3

Lateral reach — past segmentation narrative 3

Attacker
Chain this vulnerability with CVE-2021-25337 and CVE-2021-25369 for privilege escalation.
Business
Elevated risk of complete device compromise and data exfiltration from affected users.
04

What to do

— defensible action
  • Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05

Coverage & confidence

— what we know, and what we don’t

Established (cited)

  • KEV listing (CISA)
  • EPSS probability (FIRST)
  • 2 reported-exploitation source(s)
  • CWE weakness mapping (NVD)
  • Catalogued by Samsung Mobile (CNA)

    • Coverage gaps — stated, not hidden

  • No EUVD / GCVE mirror in feed — single-authority dependency for the identifier.
  • EPSS & exposure are time-varying; verify live at the source.
  • Threat-actor attribution not established from feed data — absence of a name is not absence of compromise.
  • No finder/reporter credit recorded in the public CVE entry — the work behind this find is unattributed.
    • Disclosure & credit2
    Catalogued by Samsung MobileCNA
    Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.