Patchfirst
CVE-2021-1906 KEV Medium · 5.5 EPSS 0.5%

Qualcomm Multiple Chipsets Detection of Error Condition Without Action Vulnerability

Qualcomm · Multiple Chipsets

Summary

The flaw lies in the GPU address handling of multiple Qualcomm chipsets, including Snapdragon Auto, Compute, Connectivity, Consumer IOT, Industrial IOT, Mobile, Voice & Music, and Wearables, where improper handling of address deregistration on failure can cause new GPU address allocation to fail. An attacker with local access and low-privileged authentication, requiring no user interaction, can trigger this condition to disrupt availability, with no confidentiality or integrity impact.

Official description · NVD

Improper handling of address deregistration on failure can lead to new GPU address allocation failure. in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables

Breakdown
50.7 / 100
Exploited
Yes, in CISA KEV
Reports
0
Tactics
2/15

How an attack unfolds

Based on mappings. Select a step to see the evidence.
  1. How attackers get in

  2. What they do

First seen exploited 6 months before it was disclosed.

  1. First seen exploitedVulnCheck KEV evidence6 mo before
  2. Disclosedday 0
  3. Added to CISA KEVEU database agrees+6 mo

CISA KEV listing is when exploitation was confirmed, not necessarily the first attack.

techniques

2 , grouped by in kill-chain order, 2 cited passages 2

Privilege EscalationTA0004

Exploitation for Privilege Escalation T1068 Medium
AI mapping from the description · how it is exploited

local privilege escalation via GPU driver flaw

Improper handling of address deregistration on failure
From the official description (NVD) Original (opens in a new tab) ↗

ImpactTA0040

Endpoint Denial of Service T1499 Medium
AI mapping from the description · primary impact

allocation failure causes availability impact

new GPU address allocation failure
From the official description (NVD) Original (opens in a new tab) ↗

Detection

0 rules for this CVE · 34 general rules for its techniques

Rules for this CVE

0 that reference CVE-2021-1906 directly.

CVE-specific rules are not available in this build. Search SigmaHQ ↗

General rules for this CVE’s techniques

These detect the technique in general, not this specific vulnerability.

Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.

What security researchers reported

Not named in any threat report yet

Also mentioned in 50 community threat pulses (AlienVault OTX)

Weaker evidence

Pulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.

References

2 links, grouped by NVD tag (1 duplicate merged)
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