Vulnerability-Lookup

FKIE_CVE-2026-45931

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Hold mm structure across iommu_sva_unbind_device() Some tests trigger a crash in iommu_sva_unbind_device() due to accessing iommu_mm after the associated mm structure has been freed. Fix this by taking an explicit reference to the mm structure after successfully binding the device, and releasing it only after the device is unbound. This ensures the mm remains valid for the entire SVA bind/unbind lifetime.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a9162439ad792afcddc04718408ec1380b7a5f63
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f31ccf6278132a35a652fe5eeac3941e1e912398
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f6b4c1d98a7b8040d4d02e89425b3942016a2c2c

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Hold mm structure across iommu_sva_unbind_device()\n\nSome tests trigger a crash in iommu_sva_unbind_device() due to\naccessing iommu_mm after the associated mm structure has been\nfreed.\n\nFix this by taking an explicit reference to the mm structure\nafter successfully binding the device, and releasing it only\nafter the device is unbound. This ensures the mm remains valid\nfor the entire SVA bind/unbind lifetime."
    }
  ],
  "id": "CVE-2026-45931",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:09.053",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a9162439ad792afcddc04718408ec1380b7a5f63"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f31ccf6278132a35a652fe5eeac3941e1e912398"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f6b4c1d98a7b8040d4d02e89425b3942016a2c2c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2026-45931 (GCVE-0-2026-45931)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:17 – Updated: 2026-05-27 12:17

Title

accel/amdxdna: Hold mm structure across iommu_sva_unbind_device()

Summary

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/f6b4c1d98a7b8040d…
https://git.kernel.org/stable/c/f31ccf6278132a35a…
https://git.kernel.org/stable/c/a9162439ad792afcd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: be462c97b7dfd24999babe39cce3de224ebe1f80 , < f6b4c1d98a7b8040d4d02e89425b3942016a2c2c (git) Affected: be462c97b7dfd24999babe39cce3de224ebe1f80 , < f31ccf6278132a35a652fe5eeac3941e1e912398 (git) Affected: be462c97b7dfd24999babe39cce3de224ebe1f80 , < a9162439ad792afcddc04718408ec1380b7a5f63 (git)
Linux	Linux	Affected: 6.14 Unaffected: 0 , < 6.14 (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 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/accel/amdxdna/amdxdna_pci_drv.c",
            "drivers/accel/amdxdna/amdxdna_pci_drv.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f6b4c1d98a7b8040d4d02e89425b3942016a2c2c",
              "status": "affected",
              "version": "be462c97b7dfd24999babe39cce3de224ebe1f80",
              "versionType": "git"
            },
            {
              "lessThan": "f31ccf6278132a35a652fe5eeac3941e1e912398",
              "status": "affected",
              "version": "be462c97b7dfd24999babe39cce3de224ebe1f80",
              "versionType": "git"
            },
            {
              "lessThan": "a9162439ad792afcddc04718408ec1380b7a5f63",
              "status": "affected",
              "version": "be462c97b7dfd24999babe39cce3de224ebe1f80",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/amdxdna/amdxdna_pci_drv.c",
            "drivers/accel/amdxdna/amdxdna_pci_drv.h"
          ],
          "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": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "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": "6.18.14",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "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\naccel/amdxdna: Hold mm structure across iommu_sva_unbind_device()\n\nSome tests trigger a crash in iommu_sva_unbind_device() due to\naccessing iommu_mm after the associated mm structure has been\nfreed.\n\nFix this by taking an explicit reference to the mm structure\nafter successfully binding the device, and releasing it only\nafter the device is unbound. This ensures the mm remains valid\nfor the entire SVA bind/unbind lifetime."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:17:49.527Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f6b4c1d98a7b8040d4d02e89425b3942016a2c2c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f31ccf6278132a35a652fe5eeac3941e1e912398"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9162439ad792afcddc04718408ec1380b7a5f63"
        }
      ],
      "title": "accel/amdxdna: Hold mm structure across iommu_sva_unbind_device()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45931",
    "datePublished": "2026-05-27T12:17:49.527Z",
    "dateReserved": "2026-05-13T15:03:33.086Z",
    "dateUpdated": "2026-05-27T12:17:49.527Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

FKIE_CVE-2026-45931

CVE-2026-45931 (GCVE-0-2026-45931)

Tags

Sightings

Nomenclature