CVE-2024-35821

Stale-data disclosure via premature page-cache readiness

Published May 17, 2024 · Updated May 11, 2026

Race condition in Linux UBIFS allows attackers to read stale data from a newly allocated page during concurrent file access. The write path marks the page uptodate before new contents are copied, allowing a lockless reader to consume the previous contents. Exploitation requires concurrent access to a UBIFS file during a write, and the reported consequence is limited to stale-data disclosure.

CVSS severity7.5
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Linux UBIFS allows attackers to read stale data from a newly allocated page during concurrent file access. The write path marks the page uptodate before new contents are copied, allowing a lockless reader to consume the previous contents. Exploitation requires concurrent access to a UBIFS file during a write, and the reported consequence is limited to stale-data disclosure.

The record

CVE
CVE-2024-35821
Published
May 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-772, T1005
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. May 17, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <142d87c958d9454c3cffa625fab56f3016e8f9f3
  2. Affected versionversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <17772bbe9cfa972ea1ff827319f6e1340de76566
  3. Affected versionversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <4aa554832b9dc9e66249df75b8f447d87853e12e
  4. Affected versionversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <4b7c4fc60d6a46350fbe54f5dc937aeaa02e675e
  5. Affected versionversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <723012cab779eee8228376754e22c6594229bf8f
  6. Affected versionversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <778c6ad40256f1c03244fc06d7cdf71f6b5e7310
  7. Affected versionversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <8f599ab6fabbca4c741107eade70722a98adfd9f
  8. Affected versionversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <f19b1023a3758f40791ec166038d6411c8894ae3
  9. Affected versionversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <fc99f4e2d2f1ce766c14e98463c2839194ae964f
  10. Affected versionversion=2.6.27

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <142d87c958d9454c3cffa625fab56f3016e8f9f3; version=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <17772bbe9cfa972ea1ff827319f6e1340de76566; version=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <4aa554832b9dc9e66249df75b8f447d87853e12e; version=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <4b7c4fc60d6a46350fbe54f5dc937aeaa02e675e; version=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <723012cab779eee8228376754e22c6594229bf8f; version=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <778c6ad40256f1c03244fc06d7cdf71f6b5e7310; version=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <8f599ab6fabbca4c741107eade70722a98adfd9f; version=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <f19b1023a3758f40791ec166038d6411c8894ae3; version=1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d <fc99f4e2d2f1ce766c14e98463c2839194ae964f; version=2.6.27
The Linux Kernel Organization · Linux Kernelversion=1e51764a3c2a <142d87c958d9; version=1e51764a3c2a <17772bbe9cfa; version=1e51764a3c2a <4aa554832b9d; version=1e51764a3c2a <4b7c4fc60d6a; version=1e51764a3c2a <723012cab779; version=1e51764a3c2a <778c6ad40256; version=1e51764a3c2a <8f599ab6fabb; version=1e51764a3c2a <f19b1023a375; version=1e51764a3c2a <fc99f4e2d2f1; version=2.6.27

Published CVSS scores

7.5CISACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-772Missing Release of Resource after Effective Lifetime
T1005Data from Local System

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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