CVE-2024-39510

Kernel compromise via cachefiles object use-after-free

Published Jul 12, 2024 · Updated May 11, 2026

Use-after-free in Linux kernel 6.8 cachefiles allows local users to compromise kernel confidentiality, integrity, and availability. cachefiles_ondemand_daemon_read dereferences req->object after a restore race releases the xarray lock and another path frees that object. A local low-privileged user must reach configured on-demand cachefiles restore handling; exploitation can crash the host or compromise kernel data.

CVSS severity7.8
High
EPSS probability0.28%
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 kernel 6.8 cachefiles allows local users to compromise kernel confidentiality, integrity, and availability. cachefiles_ondemand_daemon_read dereferences req->object after a restore race releases the xarray lock and another path frees that object. A local low-privileged user must reach configured on-demand cachefiles restore handling; exploitation can crash the host or compromise kernel data.

The record

CVE
CVE-2024-39510
Published
Jul 12, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 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=0a7e54c1959c0feb2de23397ec09c7692364313e <93064676a2820420a2d37d7c8289f277fe20793d
  2. Affected versionversion=0a7e54c1959c0feb2de23397ec09c7692364313e <da4a827416066191aafeeccee50a8836a826ba10
  3. Affected versionversion=6.8
  4. Affected versionversion=f17443d52d805c9a7fab5e67a4e8b973626fe1cd <cb55625f8eb9d2de8be4da0c4580d48cbb32058e
  5. Affected versionversion=f740fd943bb1fbf79b7eaba3c71eb7536f437f51 <3958679c49152391209b32be3357193300a51abd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=0a7e54c1959c0feb2de23397ec09c7692364313e <93064676a2820420a2d37d7c8289f277fe20793d; version=0a7e54c1959c0feb2de23397ec09c7692364313e <da4a827416066191aafeeccee50a8836a826ba10; version=6.8; version=f17443d52d805c9a7fab5e67a4e8b973626fe1cd <cb55625f8eb9d2de8be4da0c4580d48cbb32058e; version=f740fd943bb1fbf79b7eaba3c71eb7536f437f51 <3958679c49152391209b32be3357193300a51abd

Published CVSS scores

5.3SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
7.8Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
T1068Exploitation for Privilege Escalation

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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