CVE-2024-35948

Kernel memory corruption via unchecked journal length

Published May 20, 2024 · Updated Aug 5, 2026

Out-of-bounds access in bcachefs in Linux 6.7 through 6.8 allows local users to disclose or corrupt kernel memory via a crafted filesystem image. The clean-superblock parser trusts each journal entry's u64s length and advances beyond the section before validating that the next entry remains within bounds. Mounting the image, including through removable-media automount, can expose heap data in kernel logs, corrupt adjacent heap objects, or panic the system.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in bcachefs in Linux 6.7 through 6.8 allows local users to disclose or corrupt kernel memory via a crafted filesystem image. The clean-superblock parser trusts each journal entry's u64s length and advances beyond the section before validating that the next entry remains within bounds. Mounting the image, including through removable-media automount, can expose heap data in kernel logs, corrupt adjacent heap objects, or panic the system.

The record

CVE
CVE-2024-35948
Published
May 20, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-400, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 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=1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a <fcdbc1d7a4b638e5d5668de461f320386f3002aa
  2. Affected versionversion=6.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1c6fdbd8f2465ddfb73a01ec620cbf3d14044e1a <fcdbc1d7a4b638e5d5668de461f320386f3002aa; version=6.7
The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f4 <fcdbc1d7a4b6

Published CVSS scores

7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.4CISA ADPCVSS:3.1/AV:L/AC:L/PR:N/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-400Uncontrolled Resource Consumption
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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