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NVD / CVE Program· CNA Linux

CVE-2021-47161: spi: spi-fsl-dspi: Fix a resource leak in an error handling path

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 00450ed03a17143e2433b461a656ef9cd17c2f1d, 10a089bae827ec30ad9b6cb7048020a62fae0cfa, 12391be4724acc9269e1845ccbd881df37de4b56.

Low priority for now. Upgrade to Linux Linux 00450ed03a17143e2433b461a656ef9cd17c2f1d, 10a089bae827ec30ad9b6cb7048020a62fae0cfa, 12391be4724acc9269e1845ccbd881df37de4b56 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: spi: spi-fsl-dspi: Fix a resource leak in an error handling path 'dspi_request_dma()' should be undone by a 'dspi_release_dma()' call in the error handling path of the probe function, as already done in the remove function

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 25, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 13th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2021-47161

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

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

  • linux linux kernel4.10 and later · before 4.14.241
  • linux linux kernel4.15 and later · before 4.19.199
  • linux linux kernel4.20 and later · before 5.4.124
  • linux linux kernel5.5 and later · before 5.10.42
  • linux linux kernel5.11 and later · before 5.12.9
  • linux linux kernel5.13

Versions reported by the vendor

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

  • Linux Linux

    • 4.10affected
    • 90ba37033cb94207e97c4ced9be575770438213b and later · before 10a089bae827ec30ad9b6cb7048020a62fae0cfaaffected · git
    • 90ba37033cb94207e97c4ced9be575770438213b and later · before 00450ed03a17143e2433b461a656ef9cd17c2f1daffected · git
    • 90ba37033cb94207e97c4ced9be575770438213b and later · before 15d1cc4b4b585f9a2ce72c52cca004d5d735bdf1affected · git
    • 90ba37033cb94207e97c4ced9be575770438213b and later · before fe6921e3b8451a537e01c031b8212366bb386e3eaffected · git
    • 90ba37033cb94207e97c4ced9be575770438213b and later · before 12391be4724acc9269e1845ccbd881df37de4b56affected · git
    • 90ba37033cb94207e97c4ced9be575770438213b and later · before 680ec0549a055eb464dce6ffb4bfb736ef87236eaffected · git
    • before 4.10not affected · semver
    • 4.14.241 and later · up to and including 4.14.*not affected · semver
    • 4.19.199 and later · up to and including 4.19.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.14.6-15.14.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2021-47159Mar 25, 2024 · net: dsa: fix a crash if ->get_sset_count() fails
    22Monitor
  • ← EarlierCVE-2021-47160Mar 25, 2024 · net: dsa: mt7530: fix VLAN traffic leaks
    28Monitor
  • Later →CVE-2021-47162Mar 25, 2024 · tipc: skb_linearize the head skb when reassembling msgs
    22Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Linux Linux00450ed03a17143e2433b461a656ef9cd17c2f1dVendor (CNA)
Linux Linux10a089bae827ec30ad9b6cb7048020a62fae0cfaVendor (CNA)
Linux Linux12391be4724acc9269e1845ccbd881df37de4b56Vendor (CNA)
Linux Linux15d1cc4b4b585f9a2ce72c52cca004d5d735bdf1Vendor (CNA)
Linux Linux680ec0549a055eb464dce6ffb4bfb736ef87236eVendor (CNA)
Linux Linuxfe6921e3b8451a537e01c031b8212366bb386e3eVendor (CNA)
debian:linux5.14.6-1 · Debian:12Package registry (OSV)

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.

No history yet (it accumulates with the daily EPSS job).

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.

  • CVE-2021-4738157 days apartASoC: SOF: Fix DSP oops stack dump output contents
    22Monitor
  • CVE-2024-3593555 days apartbtrfs: send: handle path ref underflow in header iterate_inode_ref()
    13Monitor

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.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-209 · Generation of Error Message Containing Sensitive Information

CVSS vector

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

nvd-secondary

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

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

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

All records