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CVE Record

CVE-2024-39493: crypto: qat - Fix ADF_DEV_RESET_SYNC memory leak

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - Fix ADF_DEV_RESET_SYNC memory leak Using completion_done to determine whether the caller has gone away only works after a complete call. Furthermore it's still possible that the caller has not yet called wait_for_completion, resulting in another potential UAF. Fix this by making the caller use cancel_work_sync and then freeing the memory safely.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue affects the crypto QAT driver reset path. A cleanup race can leak memory and may create a use-after-free condition. The business risk depends on whether affected kernel builds and the QAT driver are present in production or embedded systems.

Executive priority

Track and remediate through normal kernel patch governance unless local exposure confirms critical infrastructure or QAT-dependent systems. Escalate priority for externally managed appliances, industrial deployments, or environments with delayed kernel patch cycles.

Technical view

The source describes misuse of completion_done to decide whether a caller had gone away. That check is unreliable before completion and can race with wait_for_completion, creating memory leak and potential UAF risk. The referenced fix uses cancel_work_sync before freeing memory.

Likely exposure

Exposure is most likely on Linux systems running affected kernel builds with the crypto QAT driver available or loaded. Siemens advisories indicate downstream product relevance, but the bundle does not provide product-specific impact details.

Exploitation context

The bundle does not show CISA KEV listing or any cited active exploitation. No exploit availability is established. Treat this as a kernel memory-safety flaw requiring patch validation, not as confirmed in-the-wild activity.

Researcher notes

Evidence is limited to the CVE description, kernel stable commits, and Siemens advisories. Severity, CVSS, CWE, and exploitation details are not supplied. Avoid assuming impact beyond the stated memory leak and potential UAF in QAT reset synchronization.

Mitigation direction

  • Apply vendor kernel updates containing the referenced stable fixes.
  • Check Linux distribution and Siemens advisories for product-specific guidance.
  • Prioritize systems using QAT-related crypto acceleration or affected embedded kernels.
  • Confirm maintenance windows for kernel updates requiring reboot.

Validation and detection

  • Inventory kernel versions across Linux and embedded assets.
  • Check whether QAT crypto driver support is present or loaded.
  • Map installed kernels to vendor fixed builds or referenced stable commits.
  • Review Siemens advisories for applicable managed or industrial products.
Prepared
Confidence
medium
Sources
12

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-2024-39493 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
3ADP providers
11Source 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

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxdaba62d9eeddcc5b1081be7d348ca836c83c59d7, 8e81cd58aee14a470891733181a47d123193ba81, d03092550f526a79cf1ade7f0dfa74906f39eb71, 4ae5a97781ce7d6ecc9c7055396535815b64ca4f, 226fc408c5fcd23cc4186f05ea3a09a7a9aef2f7, 8a5a7611ccc7b1fba8d933a9f22a2e76859d94dc, 7d42e097607c4d246d99225bf2b195b6167a210c, 7d42e097607c4d246d99225bf2b195b6167a210c, 0c2cf5142bfb634c0ef0a1a69cdf37950747d0be, bb279ead42263e9fb09480f02a4247b2c287d828unaffected
LinuxLinux6.9, 0, 4.19.316, 5.4.278, 5.10.219, 5.15.161, 6.1.94, 6.6.34, 6.9.5, 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.