CVE-2025-39870 (GCVE-0-2025-39870)

Vulnerability from cvelistv5 – Published: 2025-09-23 06:00 – Updated: 2026-05-23 16:00
VLAI
Title
dmaengine: idxd: Fix double free in idxd_setup_wqs()
Summary
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix double free in idxd_setup_wqs() The clean up in idxd_setup_wqs() has had a couple bugs because the error handling is a bit subtle. It's simpler to just re-write it in a cleaner way. The issues here are: 1) If "idxd->max_wqs" is <= 0 then we call put_device(conf_dev) when "conf_dev" hasn't been initialized. 2) If kzalloc_node() fails then again "conf_dev" is invalid. It's either uninitialized or it points to the "conf_dev" from the previous iteration so it leads to a double free. It's better to free partial loop iterations within the loop and then the unwinding at the end can handle whole loop iterations. I also renamed the labels to describe what the goto does and not where the goto was located.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d584acdf54f409cb7eae1359ae6c12aaabedeed8 , < 25e6146c2812487a88f619d5ff6efbdcd5b2bc31 (git)
Affected: 47846211998a9ffb0fcc08092eb95ac783d2b11a , < df82c7901513fd0fc738052a8e6a330d92cc8ec9 (git)
Affected: 5fcd392dae6d6aba7dc64ffdbb838ff191315da3 , < ec5430d090d0b6ace8fefa290fc37e88930017d2 (git)
Affected: 3fd2f4bc010cdfbc07dd21018dc65bd9370eb7a4 , < 9f0e225635475b2285b966271d5e82cba74295b1 (git)
Affected: 3fd2f4bc010cdfbc07dd21018dc65bd9370eb7a4 , < 39aaa337449e71a41d4813be0226a722827ba606 (git)
Affected: ed2c66000aa64c0d2621864831f0d04c820a1441 (git)
Affected: 6.1.140 , < 6.1.153 (semver)
Affected: 6.6.92 , < 6.6.107 (semver)
Affected: 6.12.30 , < 6.12.48 (semver)
Affected: 6.14.8 , < 6.15 (semver)
Create a notification for this product.
Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.1.153 , ≤ 6.1.* (semver)
Unaffected: 6.6.107 , ≤ 6.6.* (semver)
Unaffected: 6.12.48 , ≤ 6.12.* (semver)
Unaffected: 6.16.8 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.