CVE-2024-27070

Kernel memory disclosure or crash via stale VMA

Published May 1, 2024 · Updated Aug 5, 2026

Use-after-free in Linux 6.8 through 6.8.1 allows local users to read kernel memory or crash the system through an F2FS page fault. The f2fs_filemap_fault function calls filemap_fault and then reads vmf->vma->vm_flags for a tracepoint even though that VMA can already be freed. Exploitation requires local access to an affected kernel with F2FS in use and a page fault that reaches this path.

CVSS severity7.1
High
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 Linux 6.8 through 6.8.1 allows local users to read kernel memory or crash the system through an F2FS page fault. The f2fs_filemap_fault function calls filemap_fault and then reads vmf->vma->vm_flags for a tracepoint even though that VMA can already be freed. Exploitation requires local access to an affected kernel with F2FS in use and a page fault that reaches this path.

The record

CVE
CVE-2024-27070
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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=6.8
  2. Affected versionversion=87f3afd366f7c668be0269efda8a89741a3ea6b3 <8186e16a766d709a08f188d2f4e84098f364bea1
  3. Affected versionversion=87f3afd366f7c668be0269efda8a89741a3ea6b3 <eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064
  4. Affected versionversion=b43c3050d21196e5e7024872e3048dba83e31751 <897761d16564e899faecb9381b4818858705081f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=87f3afd366f7c668be0269efda8a89741a3ea6b3 <8186e16a766d709a08f188d2f4e84098f364bea1; version=87f3afd366f7c668be0269efda8a89741a3ea6b3 <eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064; version=b43c3050d21196e5e7024872e3048dba83e31751 <897761d16564e899faecb9381b4818858705081f

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

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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