CVE-2024-53073Network attack vector

Remote NFS interruption via async-copy counter underflow

Published Nov 19, 2024 · Updated Aug 5, 2026

Resource exhaustion in Linux 6.10.14 and later before 6.11, and 6.11.3 through 6.11.6, allows remote attackers to interrupt NFS service. The nfsd4_copy() error path invokes cleanup_async_copy() after pending_async_copies was already decremented, driving the counter below zero and defeating the async-copy limit. An NFSv4.2 client permitted by an export can exceed sp_nrthreads with concurrent asynchronous COPY requests, causing unbounded copy threads and memory exhaustion or a kernel panic when panic_on_warn is enabled.

CVSS severity7.5
High
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Linux 6.10.14 and later before 6.11, and 6.11.3 through 6.11.6, allows remote attackers to interrupt NFS service. The nfsd4_copy() error path invokes cleanup_async_copy() after pending_async_copies was already decremented, driving the counter below zero and defeating the async-copy limit. An NFSv4.2 client permitted by an export can exceed sp_nrthreads with concurrent asynchronous COPY requests, causing unbounded copy threads and memory exhaustion or a kernel panic when panic_on_warn is enabled.

The record

CVE
CVE-2024-53073
Published
Nov 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=43e46ee5efc03990b223f7aa8b77aa9c3d3acfdf <9467c49437e948c541569007cd412d577942e635
  2. Affected versionversion=6.10.14 <6.11
  3. Affected versionversion=6.11.3 <6.11.7
  4. Affected versionversion=6a488ad7745b8f64625c6d3a24ce7e448e83f11b <1421883aa30c5d26bc3370e2d19cb350f0d5ca28
  5. Affected versionversion=7ea9260874b779637aff6d24c344b8ef4ac862a0 <949ee5d44d1fd95119b29b3382a933cdc617bf9e
  6. Affected versionversion=9e52ff544e0bfa09ee339fd7b0937ee3c080c24e <ed98d26021db0fe62c327aa9f5e57a90bff3fa94
  7. Affected versionversion=aadc3bbea163b6caaaebfdd2b6c4667fbc726752 <8286f8b622990194207df9ab852e0f87c60d35e9
  8. Affected versionversion=ae267989b7b7933dfedcd26468d0a88fc3a9da9e <fb79d68a36e21960341ccab07d1ac06d93830321
  9. Affected versionversion=b4e21431a0db4854b5023cd5af001be557e6c3db

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=43e46ee5efc03990b223f7aa8b77aa9c3d3acfdf <9467c49437e948c541569007cd412d577942e635; version=6.10.14 <6.11; version=6.11.3 <6.11.7; version=6a488ad7745b8f64625c6d3a24ce7e448e83f11b <1421883aa30c5d26bc3370e2d19cb350f0d5ca28; version=7ea9260874b779637aff6d24c344b8ef4ac862a0 <949ee5d44d1fd95119b29b3382a933cdc617bf9e; version=9e52ff544e0bfa09ee339fd7b0937ee3c080c24e <ed98d26021db0fe62c327aa9f5e57a90bff3fa94; version=aadc3bbea163b6caaaebfdd2b6c4667fbc726752 <8286f8b622990194207df9ab852e0f87c60d35e9; version=ae267989b7b7933dfedcd26468d0a88fc3a9da9e <fb79d68a36e21960341ccab07d1ac06d93830321; version=b4e21431a0db4854b5023cd5af001be557e6c3db

Published CVSS scores

7.5Linux kernel CVE teamCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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