CVE-2024-53136Network attack vector

Remote NFS hang via recursive tmpfs inode lock

Published Dec 4, 2024 · Updated Aug 5, 2026

Deadlock in affected Linux kernel releases allows remote attackers to hang NFS service access via metadata operations on an exported tmpfs. The shmem_getattr() path takes the inode read lock while NFS metadata handlers already hold the same inode lock for writing, causing a recursive rwsem deadlock. Exposure requires a tmpfs filesystem exported through NFS; a single unauthenticated CREATE or SETATTR request can hang the server.

CVSS severity7.5
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in affected Linux kernel releases allows remote attackers to hang NFS service access via metadata operations on an exported tmpfs. The shmem_getattr() path takes the inode read lock while NFS metadata handlers already hold the same inode lock for writing, causing a recursive rwsem deadlock. Exposure requires a tmpfs filesystem exported through NFS; a single unauthenticated CREATE or SETATTR request can hang the server.

The record

CVE
CVE-2024-53136
Published
Dec 4, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 4, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3d9528484480e8f4979b3a347930ed383be99f89 <d3f9d88c2c03b2646ace336236adca19f7697bd3
  2. Affected versionversion=4.19.323 <4.19.325
  3. Affected versionversion=5.10.229 <5.10.231
  4. Affected versionversion=5.15.171 <5.15.174
  5. Affected versionversion=5.4.285 <5.4.287
  6. Affected versionversion=6.1.116 <6.1.119
  7. Affected versionversion=6.11.7 <6.11.10
  8. Affected versionversion=6.6.60 <6.6.63
  9. Affected versionversion=7cc30ada84323be19395094d567579536e0d187e <a3c65022d89d5baa2cea8e87a6de983ea305f14c
  10. Affected versionversion=82cae1e30bd940253593c2d4f16d88343d1358f4 <5874c1150e77296565ad6e495ef41fbf87570d14
  11. Affected versionversion=9fb9703cd43ee20a6de8ccdef991677b7274cec0 <36b537e8f302f670c7cf35d88a3a294443e32d52
  12. Affected versionversion=bda1a99a0dd644f31a87d636ac624eeb975cb65a <57cc8d253099d1b8627f0fb487ee011d9158ccc9
  13. Affected versionversion=d949d1d14fa281ace388b1de978e8f2cd52875cf <d1aa0c04294e29883d65eac6c2f72fe95cc7c049
  14. Affected versionversion=edd1f905050686fdc4cfe233d818469fdf7d5ff8 <64e67e8694252c1bf01b802ee911be3fee62c36b
  15. Affected versionversion=ffd56612566bc23877c8f45def2801f3324a222a <901dc2ad7c3789fa87dc3956f6697c5d62d5cf7e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3d9528484480e8f4979b3a347930ed383be99f89 <d3f9d88c2c03b2646ace336236adca19f7697bd3; version=4.19.323 <4.19.325; version=5.10.229 <5.10.231; version=5.15.171 <5.15.174; version=5.4.285 <5.4.287; version=6.1.116 <6.1.119; version=6.11.7 <6.11.10; version=6.6.60 <6.6.63; version=7cc30ada84323be19395094d567579536e0d187e <a3c65022d89d5baa2cea8e87a6de983ea305f14c; version=82cae1e30bd940253593c2d4f16d88343d1358f4 <5874c1150e77296565ad6e495ef41fbf87570d14; version=9fb9703cd43ee20a6de8ccdef991677b7274cec0 <36b537e8f302f670c7cf35d88a3a294443e32d52; version=bda1a99a0dd644f31a87d636ac624eeb975cb65a <57cc8d253099d1b8627f0fb487ee011d9158ccc9; version=d949d1d14fa281ace388b1de978e8f2cd52875cf <d1aa0c04294e29883d65eac6c2f72fe95cc7c049; version=edd1f905050686fdc4cfe233d818469fdf7d5ff8 <64e67e8694252c1bf01b802ee911be3fee62c36b; version=ffd56612566bc23877c8f45def2801f3324a222a <901dc2ad7c3789fa87dc3956f6697c5d62d5cf7e

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5Linux CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation

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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