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CVE Record

CVE-2024-57911: iio: dummy: iio_simply_dummy_buffer: fix information leak in triggered buffer

In the Linux kernel, the following vulnerability has been resolved: iio: dummy: iio_simply_dummy_buffer: fix information leak in triggered buffer The 'data' array is allocated via kmalloc() and it is used to push data to user space from a triggered buffer, but it does not set values for inactive channels, as it only uses iio_for_each_active_channel() to assign new values. Use kzalloc for the memory allocation to avoid pushing uninitialized information to userspace.

HighCVSS 7.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2024-57911 is a Linux kernel information leak in the Industrial I/O dummy buffer code. A local low-privileged user could receive uninitialized kernel memory through a triggered buffer when inactive channels are present. The issue is rated high, but the provided sources do not show internet-remote exploitation or active exploitation.

Executive priority

Patch through normal high-priority kernel maintenance, faster for shared Linux hosts, developer systems, or environments with untrusted local users. There is no provided evidence of active exploitation, but kernel memory disclosure can support broader compromise chains.

Technical view

The vulnerable path allocates a data array with kmalloc() and only initializes active channels before pushing buffer data to userspace. Inactive channel slots can contain stale memory. The kernel fix changes allocation to zero-initialized memory, preventing uninitialized data disclosure. CVSS is 7.1: local attack, low complexity, low privileges, no user interaction.

Likely exposure

Exposure is most likely on Linux systems running affected kernel branches where the IIO dummy driver and triggered buffer path are present and accessible to local users. Production exposure may be narrower than broad kernel vulnerabilities because this concerns a dummy IIO component, but configuration and packaging must be verified.

Exploitation context

The source bundle marks KEV as false and provides no cited evidence of active exploitation. The CVSS vector indicates local exploitation with low privileges and no user interaction. Treat this as a local confidentiality risk unless vendor advisories add stronger exploitation evidence.

Researcher notes

Do not assume every Linux host is practically exposed. Validate the IIO dummy driver configuration, device permissions, container access, and distribution backports. The affected-version data in the bundle is broad and commit-oriented, so vendor package mapping is necessary.

Mitigation direction

  • Apply vendor kernel updates that include the stable fixes for CVE-2024-57911.
  • Prioritize multi-user systems and hosts exposing IIO interfaces to untrusted local users.
  • Restrict access to IIO dummy buffer devices if they are not operationally required.
  • Use Debian LTS advisories where applicable for Debian package remediation guidance.

Validation and detection

  • Inventory running kernels and compare them with vendor fixed package levels.
  • Check whether the IIO dummy driver is built, loaded, or exposed on affected hosts.
  • Confirm kernel source or package changelogs include the referenced stable fix commits.
  • Rescan after patching and verify CVE-2024-57911 is no longer reported.
Prepared
Confidence
medium
Sources
11

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-908: Exact CWE lookup

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cve · low confidence lookup

CVE-2024-57911 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
2ADP providers
10Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.1CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H1.85.2CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

7.1High
CVSS 3.1 vector shape for CVE-2024-57911Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux415f792447572ef1949a3cef5119bbce8cc66373, 415f792447572ef1949a3cef5119bbce8cc66373, 415f792447572ef1949a3cef5119bbce8cc66373, 415f792447572ef1949a3cef5119bbce8cc66373, 415f792447572ef1949a3cef5119bbce8cc66373, 415f792447572ef1949a3cef5119bbce8cc66373, 415f792447572ef1949a3cef5119bbce8cc66373unaffected
LinuxLinux4.5, 0, 5.4.290, 5.10.234, 5.15.177, 6.1.125, 6.6.72, 6.12.10, 6.13affected
Weakness

CWE details

CWE-908

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CWE-908 · source CWE mapping

Use of Uninitialized Resource

Use of Uninitialized Resource represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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