CVE-2024-53164Public exploit

Local privilege escalation via stale qdisc class

Published Dec 27, 2024 · Updated Aug 5, 2026

Use-after-free in Linux 4.14 through 6.13-rc1 allows local users to gain kernel privileges through crafted traffic-control qdisc trees. Queue length is decremented after qdisc_tree_reduce_backlog(), suppressing an empty-child notification and leaving a freed class in its parent's active structure. CAP_NET_ADMIN in the target network namespace is required; user namespaces can supply it, after which the stale class enables kernel reads, writes, control-flow hijacking, or a crash.

CVSS severity7.8
High
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

Use-after-free in Linux 4.14 through 6.13-rc1 allows local users to gain kernel privileges through crafted traffic-control qdisc trees. Queue length is decremented after qdisc_tree_reduce_backlog(), suppressing an empty-child notification and leaving a freed class in its parent's active structure. CAP_NET_ADMIN in the target network namespace is required; user namespaces can supply it, after which the stale class enables kernel reads, writes, control-flow hijacking, or a crash.

The record

CVE
CVE-2024-53164
Published
Dec 27, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-459, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 27, 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=4.14
  2. Affected versionversion=959466588aa7f84ccf79ae36a1d89542eaf9aaec <33db36b3c53d0fda2699ea39ba72bee4de8336e8
  3. Affected versionversion=959466588aa7f84ccf79ae36a1d89542eaf9aaec <44782565e1e6174c94bddfa72ac7267cd09c1648
  4. Affected versionversion=959466588aa7f84ccf79ae36a1d89542eaf9aaec <489422e2befff88a1de52b2acebe7b333bded025
  5. Affected versionversion=959466588aa7f84ccf79ae36a1d89542eaf9aaec <5e473f462a16f1a34e49ea4289a667d2e4f35b52
  6. Affected versionversion=959466588aa7f84ccf79ae36a1d89542eaf9aaec <5eb7de8cd58e73851cd37ff8d0666517d9926948
  7. Affected versionversion=959466588aa7f84ccf79ae36a1d89542eaf9aaec <97e13434b5da8e91bdf965352fad2141d13d72d3
  8. Affected versionversion=959466588aa7f84ccf79ae36a1d89542eaf9aaec <e3e54ad9eff8bdaa70f897e5342e34b76109497f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.14; version=959466588aa7f84ccf79ae36a1d89542eaf9aaec <33db36b3c53d0fda2699ea39ba72bee4de8336e8; version=959466588aa7f84ccf79ae36a1d89542eaf9aaec <44782565e1e6174c94bddfa72ac7267cd09c1648; version=959466588aa7f84ccf79ae36a1d89542eaf9aaec <489422e2befff88a1de52b2acebe7b333bded025; version=959466588aa7f84ccf79ae36a1d89542eaf9aaec <5e473f462a16f1a34e49ea4289a667d2e4f35b52; version=959466588aa7f84ccf79ae36a1d89542eaf9aaec <5eb7de8cd58e73851cd37ff8d0666517d9926948; version=959466588aa7f84ccf79ae36a1d89542eaf9aaec <97e13434b5da8e91bdf965352fad2141d13d72d3; version=959466588aa7f84ccf79ae36a1d89542eaf9aaec <e3e54ad9eff8bdaa70f897e5342e34b76109497f

Published CVSS scores

7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.1Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:H/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-459Incomplete Cleanup
T1068Exploitation for Privilege Escalation

Public exploit references

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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