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CVE Record

CVE-2024-42069: net: mana: Fix possible double free in error handling path

In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix possible double free in error handling path When auxiliary_device_add() returns error and then calls auxiliary_device_uninit(), callback function adev_release calls kfree(madev). We shouldn't call kfree(madev) again in the error handling path. Set 'madev' to NULL.

HighCVSS 7.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux MANA network-driver error path can free the same memory twice. A local, low-privileged attacker might cause a crash or potentially compromise the affected system, although the supplied sources do not demonstrate a working exploit or active attacks.

Executive priority

Treat as a high-priority maintenance issue for multi-user or untrusted-workload Linux systems using MANA. Schedule prompt kernel updates after normal compatibility testing. Prioritize internet-facing cloud workloads only when local users, containers, or applications could gain low-privileged execution; the evidence does not indicate a remotely exploitable network flaw.

Technical view

If auxiliary_device_add() fails, auxiliary_device_uninit() invokes adev_release, which frees madev. The subsequent error cleanup could free madev again. The referenced kernel correction sets madev to NULL after uninitialization. CVSS 3.1 scores this 7.8 with local access, low privileges, and potentially high confidentiality, integrity, and availability impact.

Likely exposure

Exposure is most likely on affected Linux kernels where the MANA network driver is present and its auxiliary-device initialization reaches the failure path. The bundle identifies versions including 6.2, 6.6.37, 6.9.8, and 6.10, but its version-range representation is incomplete; confirm status through distribution guidance.

Exploitation context

The CVSS vector requires local access and low privileges, with no user interaction. The CVE is not in KEV, and the supplied sources report neither active exploitation nor a public proof of concept. Remote network exploitation is not supported by the evidence. Practical triggering depends on a driver-specific initialization failure.

Researcher notes

The core condition is a double free in error cleanup, not the normal initialization path. Assess reachability through MANA driver deployment and auxiliary_device_add() failure handling. The supplied version list does not clearly express introduction and fixed boundaries, so use distribution package metadata and referenced commits for authoritative backport verification.

Mitigation direction

  • Update to a vendor-supported Linux kernel containing the referenced stable correction.
  • Prioritize affected systems that load or configure the MANA network driver.
  • Consult your Linux distribution's advisory for exact fixed package versions and supported backports.
  • If updating is delayed, obtain vendor-supported mitigation guidance; the bundle names no temporary workaround.

Validation and detection

  • Inventory running kernel versions and identify systems using the MANA network driver.
  • Confirm kernel packages contain a backport matching one of the referenced stable corrections.
  • Review kernel logs for MANA auxiliary-device initialization failures or related memory errors.
  • After updating, verify the corrected kernel is running, including after reboot where required.
Prepared
Confidence
medium
Sources
6

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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CVE-2024-42069 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
5Source 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
7.8CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.8High
CVSS 3.1 vector shape for CVE-2024-42069Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxa69839d4327d053b18d8e1b0e7ddeee78db78f4f, a69839d4327d053b18d8e1b0e7ddeee78db78f4f, a69839d4327d053b18d8e1b0e7ddeee78db78f4funaffected
LinuxLinux6.2, 0, 6.6.37, 6.9.8, 6.10affected
Weakness

CWE details

No CWE listed

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