Vulnerability-Lookup

GHSA-J9J9-688W-MVPV

Vulnerability from github – Published: 2026-04-22 15:31 – Updated: 2026-04-22 15:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31436"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T14:16:36Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()\n\nAt the end of this function, d is the traversal cursor of flist, but the\ncode completes found instead. This can lead to issues such as NULL pointer\ndereferences, double completion, or descriptor leaks.\n\nFix this by completing d instead of found in the final\nlist_for_each_entry_safe() loop.",
  "id": "GHSA-j9j9-688w-mvpv",
  "modified": "2026-04-22T15:31:40Z",
  "published": "2026-04-22T15:31:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31436"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-04-22 13:53

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 ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/e21da2ad884458504…
	https://git.kernel.org/stable/c/82656e8daf8de0093…
	https://git.kernel.org/stable/c/0e4f43779d550e559…
	https://git.kernel.org/stable/c/e1c9866173c5f8521…

Impacted products

Vendor

Product

Version

Linux

Affected: aa8d18becc0c14aa3eb46d6d1b81450446e11b87 , < e21da2ad8844585040fe4b82be1ad2fe99d40074 (git)
Affected: aa8d18becc0c14aa3eb46d6d1b81450446e11b87 , < 82656e8daf8de00935ae91b91bed43f4d6e0d644 (git)
Affected: aa8d18becc0c14aa3eb46d6d1b81450446e11b87 , < 0e4f43779d550e559be13a5cdb763bad92c4cc99 (git)
Affected: aa8d18becc0c14aa3eb46d6d1b81450446e11b87 , < e1c9866173c5f8521f2d0768547a01508cb9ff27 (git)

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)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/idxd/submit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e21da2ad8844585040fe4b82be1ad2fe99d40074",
              "status": "affected",
              "version": "aa8d18becc0c14aa3eb46d6d1b81450446e11b87",
              "versionType": "git"
            },
            {
              "lessThan": "82656e8daf8de00935ae91b91bed43f4d6e0d644",
              "status": "affected",
              "version": "aa8d18becc0c14aa3eb46d6d1b81450446e11b87",
              "versionType": "git"
            },
            {
              "lessThan": "0e4f43779d550e559be13a5cdb763bad92c4cc99",
              "status": "affected",
              "version": "aa8d18becc0c14aa3eb46d6d1b81450446e11b87",
              "versionType": "git"
            },
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              "lessThan": "e1c9866173c5f8521f2d0768547a01508cb9ff27",
              "status": "affected",
              "version": "aa8d18becc0c14aa3eb46d6d1b81450446e11b87",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/idxd/submit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.80",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.21",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()\n\nAt the end of this function, d is the traversal cursor of flist, but the\ncode completes found instead. This can lead to issues such as NULL pointer\ndereferences, double completion, or descriptor leaks.\n\nFix this by completing d instead of found in the final\nlist_for_each_entry_safe() loop."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-22T13:53:35.693Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074"
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        },
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          "url": "https://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99"
        },
        {
          "url": "https://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27"
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      ],
      "title": "dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31436",
    "datePublished": "2026-04-22T13:53:35.693Z",
    "dateReserved": "2026-03-09T15:48:24.089Z",
    "dateUpdated": "2026-04-22T13:53:35.693Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-J9J9-688W-MVPV

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

Tags

Sightings

Nomenclature