CVE-2026-31436 (GCVE-0-2026-31436)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-08-05 12:22
VLAI
Title
dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
Summary
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() At the end of this function, d is the traversal cursor of flist, but the code completes found instead. This can lead to issues such as NULL pointer dereferences, double completion, or descriptor leaks. Fix this by completing d instead of found in the final list_for_each_entry_safe() loop.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: aa8d18becc0c14aa3eb46d6d1b81450446e11b87 , < e21da2ad8844585040fe4b82be1ad2fe99d40074 (git)
Affected: aa8d18becc0c14aa3eb46d6d1b81450446e11b87 , < 82656e8daf8de00935ae91b91bed43f4d6e0d644 (git)
Affected: aa8d18becc0c14aa3eb46d6d1b81450446e11b87 , < 0e4f43779d550e559be13a5cdb763bad92c4cc99 (git)
Affected: aa8d18becc0c14aa3eb46d6d1b81450446e11b87 , < e1c9866173c5f8521f2d0768547a01508cb9ff27 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          }
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      "product_status:known_affected": "260",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()",
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      "cve": "CVE-2026-31436",
      "id": "CVE-2026-31436",
      "initial_release_date": "2026-04-23T01:26:30Z",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-31436",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-31436.json",
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}



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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

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  • 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.
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  • 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.


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