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NVD / CVE Program· CNA Linux

CVE-2021-47314: memory: fsl_ifc: fix leak of private memory on probe failure

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: 0.24% (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 3b45b8a7d549bd92ec94b5357c2c2c1a7ed107e4, 443f6ca6fd186b4fa4e6f377b6e19a91feb1a0d5, 48ee69825f7480622ed447b0249123236d3b3ad0.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3b45b8a7d549bd92ec94b5357c2c2c1a7ed107e4, 443f6ca6fd186b4fa4e6f377b6e19a91feb1a0d5, 48ee69825f7480622ed447b0249123236d3b3ad0 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: memory: fsl_ifc: fix leak of private memory on probe failure On probe error the driver should free the memory allocated for private structure. Fix this by using resource-managed allocation.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 21, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 15th 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-2021-47314

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 kernel3.3 and later · before 4.4.276
  • linux linux kernel4.5 and later · before 4.9.276
  • linux linux kernel4.10 and later · before 4.14.240
  • linux linux kernel4.15 and later · before 4.19.198
  • linux linux kernel4.20 and later · before 5.4.134
  • linux linux kernel5.5 and later · before 5.10.52
  • linux linux kernel5.11 and later · before 5.12.19
  • linux linux kernel5.13 and later · before 5.13.4

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

    • 3.3affected
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before 8018476756066e97ecb886c3dc024aeb7d5792adaffected · git
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before 3b45b8a7d549bd92ec94b5357c2c2c1a7ed107e4affected · git
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before 7626ffbea708e5aba6912295c012d2b409a1769faffected · git
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before ee1aa737ba0b75ab8af3444c4ae5bdba36aed6e6affected · git
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before 443f6ca6fd186b4fa4e6f377b6e19a91feb1a0d5affected · git
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before b5789e23773f4a852fbfe244b63f675e265d3a7faffected · git
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before 48ee69825f7480622ed447b0249123236d3b3ad0affected · git
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before a6b45b4932f7b0c36b41fb56a35ad679ece939a0affected · git
    • a20cbdeffce247a2b6fb83cd8d22433994068565 and later · before 8e0d09b1232d0538066c40ed4c13086faccbdff6affected · git

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
SUSE:Linux Enterprise Micro 5.1kernel-rtbefore 5.3.18-150300.211.15.3.18-150300.211.1
SUSE:Linux Enterprise Micro 5.1kernel-source-rtbefore 5.3.18-150300.211.15.3.18-150300.211.1

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-2021-47312May 21, 2024 · netfilter: nf_tables: Fix dereference of null pointer flow
    22Monitor
  • ← EarlierCVE-2021-47313May 21, 2024 · cpufreq: CPPC: Fix potential memleak in cppc_cpufreq_cpu_init
    33Monitor
  • Later →CVE-2021-47315May 21, 2024 · memory: fsl_ifc: fix leak of IO mapping on probe failure
    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 Linux3b45b8a7d549bd92ec94b5357c2c2c1a7ed107e4Vendor (CNA)
Linux Linux443f6ca6fd186b4fa4e6f377b6e19a91feb1a0d5Vendor (CNA)
Linux Linux48ee69825f7480622ed447b0249123236d3b3ad0Vendor (CNA)
Linux Linux7626ffbea708e5aba6912295c012d2b409a1769fVendor (CNA)
Linux Linux8018476756066e97ecb886c3dc024aeb7d5792adVendor (CNA)
Linux Linux8e0d09b1232d0538066c40ed4c13086faccbdff6Vendor (CNA)
Linux Linuxa6b45b4932f7b0c36b41fb56a35ad679ece939a0Vendor (CNA)
Linux Linuxb5789e23773f4a852fbfe244b63f675e265d3a7fVendor (CNA)
Linux Linuxee1aa737ba0b75ab8af3444c4ae5bdba36aed6e6Vendor (CNA)
debian:linux5.14.6-1 · Debian:12Package registry (OSV)
suse:kernel-rt5.3.18-150300.211.1 · SUSE:Linux Enterprise Micro 5.1Package registry (OSV)
suse:kernel-source-rt5.3.18-150300.211.1 · SUSE:Linux Enterprise Micro 5.1Package 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.

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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

References

Show all references (8 more)

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

All records