fkie_nvd - fkie_cve-2025-40276

FKIE_CVE-2025-40276

Vulnerability from fkie_nvd - Published: 2025-12-06 22:15 - Updated: 2025-12-08 18:26

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Flush shmem writes before mapping buffers CPU-uncached The shmem layer zeroes out the new pages using cached mappings, and if we don't CPU-flush we might leave dirty cachelines behind, leading to potential data leaks and/or asynchronous buffer corruption when dirty cachelines are evicted.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/576c930e5e7dcb937648490611a83f1bf0171048
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7a12f9c96d06b145562f76ffb20369b4692f0911

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Flush shmem writes before mapping buffers CPU-uncached\n\nThe shmem layer zeroes out the new pages using cached mappings, and if\nwe don\u0027t CPU-flush we might leave dirty cachelines behind, leading to\npotential data leaks and/or asynchronous buffer corruption when dirty\ncachelines are evicted."
    }
  ],
  "id": "CVE-2025-40276",
  "lastModified": "2025-12-08T18:26:49.133",
  "metrics": {},
  "published": "2025-12-06T22:15:55.433",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/576c930e5e7dcb937648490611a83f1bf0171048"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7a12f9c96d06b145562f76ffb20369b4692f0911"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2025-40276 (GCVE-0-2025-40276)

Vulnerability from cvelistv5 – Published: 2025-12-06 21:50 – Updated: 2025-12-06 21:50

Title

drm/panthor: Flush shmem writes before mapping buffers CPU-uncached

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/7a12f9c96d06b1455…
	https://git.kernel.org/stable/c/576c930e5e7dcb937…

Impacted products

Vendor

Product

Version

Linux

Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 7a12f9c96d06b145562f76ffb20369b4692f0911 (git)
Affected: 8a1cc07578bf42d85f008316873d710ff684dd29 , < 576c930e5e7dcb937648490611a83f1bf0171048 (git)

Linux

Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.17.9 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/panthor/panthor_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7a12f9c96d06b145562f76ffb20369b4692f0911",
              "status": "affected",
              "version": "8a1cc07578bf42d85f008316873d710ff684dd29",
              "versionType": "git"
            },
            {
              "lessThan": "576c930e5e7dcb937648490611a83f1bf0171048",
              "status": "affected",
              "version": "8a1cc07578bf42d85f008316873d710ff684dd29",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/panthor/panthor_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.9",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Flush shmem writes before mapping buffers CPU-uncached\n\nThe shmem layer zeroes out the new pages using cached mappings, and if\nwe don\u0027t CPU-flush we might leave dirty cachelines behind, leading to\npotential data leaks and/or asynchronous buffer corruption when dirty\ncachelines are evicted."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-06T21:50:59.035Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7a12f9c96d06b145562f76ffb20369b4692f0911"
        },
        {
          "url": "https://git.kernel.org/stable/c/576c930e5e7dcb937648490611a83f1bf0171048"
        }
      ],
      "title": "drm/panthor: Flush shmem writes before mapping buffers CPU-uncached",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40276",
    "datePublished": "2025-12-06T21:50:59.035Z",
    "dateReserved": "2025-04-16T07:20:57.184Z",
    "dateUpdated": "2025-12-06T21:50:59.035Z",
    "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-2025-40276

CVE-2025-40276 (GCVE-0-2025-40276)

Tags

Sightings

Nomenclature