CVE-2024-50084

Kernel memory exhaustion via omitted rule cleanup

Published Oct 29, 2024 · Updated May 23, 2026

Memory leaks in Linux 6.6.51 through 6.6.57 and 6.10.10 through 6.11.4 allow local users to exhaust kernel memory via a KUnit test. The vcap_api_encode_rule_test() function allocates rules, keys, and actions but omits vcap_free_rule() after each case, leaving objects unreferenced. Reachability requires a kernel built with the Microchip VCAP KUnit test and the ability to run that local self-test; ordinary network traffic does not trigger the leak.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leaks in Linux 6.6.51 through 6.6.57 and 6.10.10 through 6.11.4 allow local users to exhaust kernel memory via a KUnit test. The vcap_api_encode_rule_test() function allocates rules, keys, and actions but omits vcap_free_rule() after each case, leaving objects unreferenced. Reachability requires a kernel built with the Microchip VCAP KUnit test and the ability to run that local self-test; ordinary network traffic does not trigger the leak.

The record

CVE
CVE-2024-50084
Published
Oct 29, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 29, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=6.10.10 <6.11
  2. Affected versionversion=6.11
  3. Affected versionversion=6.6.51 <6.6.58
  4. Affected versionversion=a3c1e45156ad39f225cd7ddae0f81230a3b1e657 <170792097bb21e5da77443b6a03d35489813eabe
  5. Affected versionversion=a3c1e45156ad39f225cd7ddae0f81230a3b1e657 <217a3d98d1e9891a8b1438a27dfbc64ddf01f691
  6. Affected versionversion=b0804c286ccfcf5f5c004d5bf8a54c0508b5e86b <20b5342de51bda794791e013b90754774003a515
  7. Affected versionversion=f7fe95f40c85311c98913fe6ae2c56adb7f767a7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10.10 <6.11; version=6.11; version=6.6.51 <6.6.58; version=a3c1e45156ad39f225cd7ddae0f81230a3b1e657 <170792097bb21e5da77443b6a03d35489813eabe; version=a3c1e45156ad39f225cd7ddae0f81230a3b1e657 <217a3d98d1e9891a8b1438a27dfbc64ddf01f691; version=b0804c286ccfcf5f5c004d5bf8a54c0508b5e86b <20b5342de51bda794791e013b90754774003a515; version=f7fe95f40c85311c98913fe6ae2c56adb7f767a7

Published CVSS scores

5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8CISA ADP VulnrichmentCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
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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