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CVE Record

CVE-2024-42229: crypto: aead,cipher - zeroize key buffer after use

In the Linux kernel, the following vulnerability has been resolved: crypto: aead,cipher - zeroize key buffer after use I.G 9.7.B for FIPS 140-3 specifies that variables temporarily holding cryptographic information should be zeroized once they are no longer needed. Accomplish this by using kfree_sensitive for buffers that previously held the private key.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue concerns temporary crypto key material not being wiped from memory after use. The fix changes affected buffers to sensitive free handling. Business impact is mainly compliance and defense-in-depth around key exposure, not an internet-exposed remote takeover based on the provided sources.

Executive priority

Handle through normal kernel patch management, with higher priority for cryptographic, regulated, or multi-tenant systems. The evidence supports a real hardening fix, but not emergency treatment absent vendor-specific risk or active exploitation signals.

Technical view

The Linux kernel crypto aead/cipher code previously freed buffers that had held private key material without explicit zeroization. The resolved change uses kfree_sensitive so memory containing cryptographic information is cleared after use, aligning with FIPS 140-3 guidance referenced by the CVE description.

Likely exposure

Exposure is limited to systems running affected Linux kernel versions or vendor kernels that inherited this crypto memory-handling behavior. The bundle lists Linux kernel references and a Debian LTS advisory, but does not identify a specific remotely reachable service or application-level trigger.

Exploitation context

The provided sources do not show active exploitation, public exploit availability, or KEV listing. Practical impact would require an additional way to recover or inspect freed kernel memory; that prerequisite is not established in the source bundle.

Researcher notes

Focus validation on whether the target kernel contains the stable commit or downstream backport using kfree_sensitive for the affected crypto buffers. The bundle provides no CVSS, CWE, exploit path, or trigger details, so avoid overstating reachability.

Mitigation direction

  • Update affected Linux kernels through the OS or distribution vendor channel.
  • Prioritize systems subject to FIPS or cryptographic key-handling compliance requirements.
  • Review vendor advisories for branch-specific fixed kernel versions and backports.
  • Schedule reboots where required for kernel updates to take effect.

Validation and detection

  • Inventory Linux kernel versions across servers, appliances, containers hosts, and images.
  • Compare deployed kernels against vendor advisories and the listed stable kernel commits.
  • Confirm the running kernel after patching, not only the installed package version.
  • Check Debian LTS guidance if using affected Debian long-term support releases.
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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2024-42229 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
3Timeline events
2ADP providers
10Source links

SSVC decision data

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

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux06817176784f620984200dc5d7cbe16984f7b262, 06817176784f620984200dc5d7cbe16984f7b262, 06817176784f620984200dc5d7cbe16984f7b262, 06817176784f620984200dc5d7cbe16984f7b262, 06817176784f620984200dc5d7cbe16984f7b262, 06817176784f620984200dc5d7cbe16984f7b262, 06817176784f620984200dc5d7cbe16984f7b262, 06817176784f620984200dc5d7cbe16984f7b262unaffected
LinuxLinux2.6.23, 0, 4.19.323, 5.4.285, 5.10.222, 5.15.163, 6.1.98, 6.6.39, 6.9.9, 6.10affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.