CVE-2024-35852

Memory exhaustion via canceled pending ACL rehash

Published May 17, 2024 · Updated May 11, 2026

Memory leak in the Linux kernel mlxsw ACL TCAM code allows local users to consume kernel memory during ACL region teardown. The rehash worker can remain pending with allocated object-aggregation hints after an error, but cancellation during teardown fails to release those hints. Reachability requires the mlxsw Spectrum ACL path and a rehash error; repeated teardown progressively reduces available memory.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Linux kernel mlxsw ACL TCAM code allows local users to consume kernel memory during ACL region teardown. The rehash worker can remain pending with allocated object-aggregation hints after an error, but cancellation during teardown fails to release those hints. Reachability requires the mlxsw Spectrum ACL path and a rehash error; repeated teardown progressively reduces available memory.

The record

CVE
CVE-2024-35852
Published
May 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

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=5.1
  2. Affected versionversion=c9c9af91f1d9a636aecc55302c792538e549a430 <51cefc9da400b953fee749c9e5d26cd4a2b5d758
  3. Affected versionversion=c9c9af91f1d9a636aecc55302c792538e549a430 <5bfe7bf9656ed2633718388f12b7c38b86414a04
  4. Affected versionversion=c9c9af91f1d9a636aecc55302c792538e549a430 <63d814d93c5cce4c18284adc810028f28dca493f
  5. Affected versionversion=c9c9af91f1d9a636aecc55302c792538e549a430 <857ed800133ffcfcee28582090b63b0cbb8ba59d
  6. Affected versionversion=c9c9af91f1d9a636aecc55302c792538e549a430 <d72dd6fcd7886d0523afbab8b4a4b22d17addd7d
  7. Affected versionversion=c9c9af91f1d9a636aecc55302c792538e549a430 <de1aaefa75be9d0ec19c9a3e0e2f9696de20c6ab
  8. Affected versionversion=c9c9af91f1d9a636aecc55302c792538e549a430 <fb4e2b70a7194b209fc7320bbf33b375f7114bd5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.1; version=c9c9af91f1d9a636aecc55302c792538e549a430 <51cefc9da400b953fee749c9e5d26cd4a2b5d758; version=c9c9af91f1d9a636aecc55302c792538e549a430 <5bfe7bf9656ed2633718388f12b7c38b86414a04; version=c9c9af91f1d9a636aecc55302c792538e549a430 <63d814d93c5cce4c18284adc810028f28dca493f; version=c9c9af91f1d9a636aecc55302c792538e549a430 <857ed800133ffcfcee28582090b63b0cbb8ba59d; version=c9c9af91f1d9a636aecc55302c792538e549a430 <d72dd6fcd7886d0523afbab8b4a4b22d17addd7d; version=c9c9af91f1d9a636aecc55302c792538e549a430 <de1aaefa75be9d0ec19c9a3e0e2f9696de20c6ab; version=c9c9af91f1d9a636aecc55302c792538e549a430 <fb4e2b70a7194b209fc7320bbf33b375f7114bd5

Published CVSS scores

5.5NIST NVDCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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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