Vulnerability-Lookup

FKIE_CVE-2026-31442

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-04-23 16:17

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix possible invalid memory access after FLR In the case that the first Function Level Reset (FLR) concludes correctly, but in the second FLR the scratch area for the saved configuration cannot be allocated, it's possible for a invalid memory access to happen. Always set the deallocated scratch area to NULL after FLR completes.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/504c0e6751001ac46917c73e703f2b1b92cfc026
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/867d0c801f21370d561420fa32f2ea1a7dc3a22d
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d6077df7b75d26e4edf98983836c05d00ebabd8d

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix possible invalid memory access after FLR\n\nIn the case that the first Function Level Reset (FLR) concludes\ncorrectly, but in the second FLR the scratch area for the saved\nconfiguration cannot be allocated, it\u0027s possible for a invalid memory\naccess to happen.\n\nAlways set the deallocated scratch area to NULL after FLR completes."
    }
  ],
  "id": "CVE-2026-31442",
  "lastModified": "2026-04-23T16:17:41.280",
  "metrics": {},
  "published": "2026-04-22T14:16:37.703",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/504c0e6751001ac46917c73e703f2b1b92cfc026"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/867d0c801f21370d561420fa32f2ea1a7dc3a22d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d6077df7b75d26e4edf98983836c05d00ebabd8d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2026-31442 (GCVE-0-2026-31442)

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

Title

dmaengine: idxd: Fix possible invalid memory access after FLR

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/504c0e6751001ac46…
	https://git.kernel.org/stable/c/867d0c801f21370d5…
	https://git.kernel.org/stable/c/d6077df7b75d26e4e…

Impacted products

Vendor

Product

Version

Linux

Affected: 98d187a989036096feaa2fef1ec3b2240ecdeacf , < 504c0e6751001ac46917c73e703f2b1b92cfc026 (git)
Affected: 98d187a989036096feaa2fef1ec3b2240ecdeacf , < 867d0c801f21370d561420fa32f2ea1a7dc3a22d (git)
Affected: 98d187a989036096feaa2fef1ec3b2240ecdeacf , < d6077df7b75d26e4edf98983836c05d00ebabd8d (git)

Linux

Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/idxd/init.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "504c0e6751001ac46917c73e703f2b1b92cfc026",
              "status": "affected",
              "version": "98d187a989036096feaa2fef1ec3b2240ecdeacf",
              "versionType": "git"
            },
            {
              "lessThan": "867d0c801f21370d561420fa32f2ea1a7dc3a22d",
              "status": "affected",
              "version": "98d187a989036096feaa2fef1ec3b2240ecdeacf",
              "versionType": "git"
            },
            {
              "lessThan": "d6077df7b75d26e4edf98983836c05d00ebabd8d",
              "status": "affected",
              "version": "98d187a989036096feaa2fef1ec3b2240ecdeacf",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/idxd/init.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "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": "6.18.21",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.11",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix possible invalid memory access after FLR\n\nIn the case that the first Function Level Reset (FLR) concludes\ncorrectly, but in the second FLR the scratch area for the saved\nconfiguration cannot be allocated, it\u0027s possible for a invalid memory\naccess to happen.\n\nAlways set the deallocated scratch area to NULL after FLR completes."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-22T13:53:39.895Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/504c0e6751001ac46917c73e703f2b1b92cfc026"
        },
        {
          "url": "https://git.kernel.org/stable/c/867d0c801f21370d561420fa32f2ea1a7dc3a22d"
        },
        {
          "url": "https://git.kernel.org/stable/c/d6077df7b75d26e4edf98983836c05d00ebabd8d"
        }
      ],
      "title": "dmaengine: idxd: Fix possible invalid memory access after FLR",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31442",
    "datePublished": "2026-04-22T13:53:39.895Z",
    "dateReserved": "2026-03-09T15:48:24.090Z",
    "dateUpdated": "2026-04-22T13:53:39.895Z",
    "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

FKIE_CVE-2026-31442

CVE-2026-31442 (GCVE-0-2026-31442)

Tags

Sightings

Nomenclature