CVE-2024-43853Public exploit

Local kernel crash via cpuset root race

Published Aug 17, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel allows local users to crash the system by racing proc cpuset reads with cgroup v1 unmounts. proc_cpuset_show retains a cgroup root pointer while concurrent unmount rebinding can free that root, then passes the stale pointer into cgroup_path_ns_locked. Exploitation requires local access and the ability to manipulate a cgroup v1 cpuset mount; the reported consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.23%
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 the Linux kernel allows local users to crash the system by racing proc cpuset reads with cgroup v1 unmounts. proc_cpuset_show retains a cgroup root pointer while concurrent unmount rebinding can free that root, then passes the stale pointer into cgroup_path_ns_locked. Exploitation requires local access and the ability to manipulate a cgroup v1 cpuset mount; the reported consequence is a kernel crash.

The record

CVE
CVE-2024-43853
Published
Aug 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 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=4.6
  2. Affected versionversion=a79a908fd2b080977b45bf103184b81c9d11ad07 <10aeaa47e4aa2432f29b3e5376df96d7dac5537a
  3. Affected versionversion=a79a908fd2b080977b45bf103184b81c9d11ad07 <1be59c97c83ccd67a519d8a49486b3a8a73ca28a
  4. Affected versionversion=a79a908fd2b080977b45bf103184b81c9d11ad07 <27d6dbdc6485d68075a0ebf8544d6425c1ed84bb
  5. Affected versionversion=a79a908fd2b080977b45bf103184b81c9d11ad07 <29a8d4e02fd4840028c38ceb1536cc8f82a257d4
  6. Affected versionversion=a79a908fd2b080977b45bf103184b81c9d11ad07 <29ac1d238b3bf126af36037df80d7ecc4822341e
  7. Affected versionversion=a79a908fd2b080977b45bf103184b81c9d11ad07 <4e8d6ac8fc9f843e940ab7389db8136634e07989
  8. Affected versionversion=a79a908fd2b080977b45bf103184b81c9d11ad07 <688325078a8b5badd6e07ae22b27cd04e9947aec
  9. Affected versionversion=a79a908fd2b080977b45bf103184b81c9d11ad07 <96226fbed566f3f686f53a489a29846f2d538080

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.6; version=a79a908fd2b080977b45bf103184b81c9d11ad07 <10aeaa47e4aa2432f29b3e5376df96d7dac5537a; version=a79a908fd2b080977b45bf103184b81c9d11ad07 <1be59c97c83ccd67a519d8a49486b3a8a73ca28a; version=a79a908fd2b080977b45bf103184b81c9d11ad07 <27d6dbdc6485d68075a0ebf8544d6425c1ed84bb; version=a79a908fd2b080977b45bf103184b81c9d11ad07 <29a8d4e02fd4840028c38ceb1536cc8f82a257d4; version=a79a908fd2b080977b45bf103184b81c9d11ad07 <29ac1d238b3bf126af36037df80d7ecc4822341e; version=a79a908fd2b080977b45bf103184b81c9d11ad07 <4e8d6ac8fc9f843e940ab7389db8136634e07989; version=a79a908fd2b080977b45bf103184b81c9d11ad07 <688325078a8b5badd6e07ae22b27cd04e9947aec; version=a79a908fd2b080977b45bf103184b81c9d11ad07 <96226fbed566f3f686f53a489a29846f2d538080

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

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-416Use After Free
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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