Skip to content
Noroxi
CVE-2021-1958· NVD / CVE Program· CNA qualcomm

A race condition in fastrpc kernel driver for dynamic process creation can lead to use after free scenario in Snapdragon Auto, Snapdragon Co

A race condition in fastrpc kernel driver for dynamic process creation can lead to use after free scenario in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Mobile, Snapdragon Wearables

MediumCVSS 6.4 · v3.1—No exploit No fix recorded

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help
Published
Sep 9, 2021
Updated
Jun 16, 2026
EPSS
0.1% · 1th percentile
Follow this CVE

Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.

Report tools

JSON

Action score

25

Monitor

Low priority for now.

CVSS
25 / 40 · 6.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
6.4
CNA · qualcomm
6.7
0.3 point gap

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
qualcommqca6574a firmware
qualcommqca6574a
qualcommqca6574au firmware
qualcommqca6574au
qualcommqca6595 firmware
qualcommqca6595
qualcommqca6595au firmware
qualcommqca6595au
qualcommqca6696 firmware
qualcommqca6696
qualcommsa6145p firmware
qualcommsa6145p

and 64 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • qualcomm qca6574a firmwareall versions
  • qualcomm qca6574au firmwareall versions
  • qualcomm qca6595 firmwareall versions
  • qualcomm qca6595au firmwareall versions
  • qualcomm qca6696 firmwareall versions
  • qualcomm sa6145p firmwareall versions
  • qualcomm sa6150p firmwareall versions
  • qualcomm sa6155p firmwareall versions
  • qualcomm sa8145p firmwareall versions
  • qualcomm sa8150p firmwareall versions
  • qualcomm sa8155 firmwareall versions
  • qualcomm sa8155p firmwareall versions
  • qualcomm sa8195p firmwareall versions
  • qualcomm sd480 firmwareall versions
  • qualcomm sd778g firmwareall versions
  • qualcomm sd780g firmwareall versions
  • qualcomm sd888 5g firmwareall versions
  • qualcomm sda429w firmwareall versions
  • qualcomm sm7325 firmwareall versions
  • qualcomm wcd9341 firmwareall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (qualcomm). Independent of NVD's CPE analysis and usually ahead of it.

  • Qualcomm, Inc. Snapdragon Auto, Snapdragon Connectivity, Snapdragon Mobile, Snapdragon Wearables

    • QCA6574A, QCA6574AU, QCA6595, QCA6595AU, QCA6696, SA6145P, SA6150P, SA6155P, SA8145P, SA8150P, SA8155, SA8155P, SA8195P, SD480, SD778G, SD780G, SD888 5G, SDA429W, SM7315, SM7325P, WCD9341, WCD9370, WCaffected

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records