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NVD / CVE Program· CNA Linux

CVE-2021-47000: ceph: fix inode leak on getattr error in __fh_to_dentry

LowCVSS 3.3 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 13/100)

  • 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 0a219432127d396120fc88cabd82785e0ff72a2f, 1775c7ddacfcea29051c67409087578f8f4d751b, 22fa4c8288f1ec40f6d62d7a32c57ac176f9f0bc.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0a219432127d396120fc88cabd82785e0ff72a2f, 1775c7ddacfcea29051c67409087578f8f4d751b, 22fa4c8288f1ec40f6d62d7a32c57ac176f9f0bc 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: ceph: fix inode leak on getattr error in __fh_to_dentry

Published
Feb 28, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 15th percentile
CWE
—

Report tools

JSON

Action score

13

Monitor

Low priority for now.

CVSS
13 / 40 · 3.3 / 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-2021-47000

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

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

    • 10b7ddff50b3334414c0be4b6009671b18ba4845, 5.8affected
    • 807460787179dee5f74906965eeb5f3ca2353992 and later · before 2ad8af2b70e986284050213230428b823b950a38affected · git
    • 878dabb64117406abd40977b87544d05bb3031fc and later · before bf45c9fe99aa8003d2703f1bd353f956dea47e40affected · git
    • 878dabb64117406abd40977b87544d05bb3031fc and later · before 22fa4c8288f1ec40f6d62d7a32c57ac176f9f0bcaffected · git
    • 878dabb64117406abd40977b87544d05bb3031fc and later · before 0a219432127d396120fc88cabd82785e0ff72a2faffected · git
    • 878dabb64117406abd40977b87544d05bb3031fc and later · before 1775c7ddacfcea29051c67409087578f8f4d751baffected · git
    • 5.4.49 and later · before 5.4.120affected · semver
    • 5.7.6 and later · before 5.8affected · semver
    • before 5.8not affected · semver
    • 5.4.120 and later · up to and including 5.4.*not affected · semver
Affected versions · NVD (4)

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

  • linux linux kernel5.4.49 and later · before 5.4.120
  • linux linux kernel5.8 and later · before 5.10.38
  • linux linux kernel5.11 and later · before 5.11.22
  • linux linux kernel5.12 and later · before 5.12.5

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.10.38-15.10.38-1

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-2021-46998Feb 28, 2024 · ethernet:enic: Fix a use after free bug in enic_hard_start_xmit
    31Monitor
  • ← EarlierCVE-2021-46999Feb 28, 2024 · sctp: do asoc update earlier in sctp_sf_do_dupcook_a
    31Monitor
  • Later →CVE-2021-47001Feb 28, 2024 · xprtrdma: Fix cwnd update ordering
    18Monitor

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 Linux0a219432127d396120fc88cabd82785e0ff72a2fVendor (CNA)
Linux Linux1775c7ddacfcea29051c67409087578f8f4d751bVendor (CNA)
Linux Linux22fa4c8288f1ec40f6d62d7a32c57ac176f9f0bcVendor (CNA)
Linux Linux2ad8af2b70e986284050213230428b823b950a38Vendor (CNA)
Linux Linux5.4.120Vendor (CNA)
Linux Linux5.8Vendor (CNA)
Linux Linuxbf45c9fe99aa8003d2703f1bd353f956dea47e40Vendor (CNA)
debian:linux5.10.38-1 · 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.

National notice (Türkiye Cybersecurity Directorate / USOM)

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

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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
low · 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
Low

Weakness class (CWE)

—

CVSS vector

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

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.

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

References

Show all references (4 more)

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

All records