Vulnerability-Lookup

CVE-2026-80887 (GCVE-0-2026-80887)

Vulnerability from cvelistv5 – Published: 2026-09-04 17:11 – Updated: 2026-09-04 17:11

Title

drm/vmwgfx: use check_add_overflow for shader size+offset bound

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: use check_add_overflow for shader size+offset bound vmw_shader_define() validates the user-supplied shader window against its backing buffer with (u64)buffer->tbo.base.size < (u64)size + (u64)offset drm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is near U64_MAX the unsigned addition wraps and the resulting tiny value passes the check. The unbounded offset is then stored in res->guest_memory_offset and forwarded to host SVGA shader-create commands. Use check_add_overflow() to detect the wrap and compare the resulting endpoint against the buffer size.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/1bbe7751f5ebac383…
https://git.kernel.org/stable/c/d3f44438aa805270a…
https://git.kernel.org/stable/c/cfd163169af3be56e…
https://git.kernel.org/stable/c/5c725901908eb1e52…
https://git.kernel.org/stable/c/54d56d5b42d2e4c72…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 668b206601c5f5063e03b76784a0d3024fa2b249 , < 1bbe7751f5ebac383405ef29a66622d65bd505d3 (git) Affected: 668b206601c5f5063e03b76784a0d3024fa2b249 , < d3f44438aa805270aaead3b6840ccaea0f4c11f9 (git) Affected: 668b206601c5f5063e03b76784a0d3024fa2b249 , < cfd163169af3be56eaef113c680ea251f0d09189 (git) Affected: 668b206601c5f5063e03b76784a0d3024fa2b249 , < 5c725901908eb1e52a16fc0e2373cb761df42d21 (git) Affected: 668b206601c5f5063e03b76784a0d3024fa2b249 , < 54d56d5b42d2e4c72ba6e365e9774da90698aa22 (git)	guessed
Linux	Linux	Affected: 6.4 Unaffected: 0 , < 6.4 (semver) Unaffected: 6.6.151 , ≤ 6.6.* (semver) Unaffected: 6.12.103 , ≤ 6.12.* (semver) Unaffected: 6.18.44 , ≤ 6.18.* (semver) Unaffected: 7.1.8 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/vmwgfx/vmwgfx_shader.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.4",
                  "vulnerable": true
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              "operator": "OR"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: use check_add_overflow for shader size+offset bound\n\nvmw_shader_define() validates the user-supplied shader window against\nits backing buffer with\n\n\t(u64)buffer-\u003etbo.base.size \u003c (u64)size + (u64)offset\n\ndrm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is\nnear U64_MAX the unsigned addition wraps and the resulting tiny value\npasses the check.  The unbounded offset is then stored in\nres-\u003eguest_memory_offset and forwarded to host SVGA shader-create\ncommands.\n\nUse check_add_overflow() to detect the wrap and compare the resulting\nendpoint against the buffer size."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-04T17:11:04.063Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/1bbe7751f5ebac383405ef29a66622d65bd505d3"
        },
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          "url": "https://git.kernel.org/stable/c/d3f44438aa805270aaead3b6840ccaea0f4c11f9"
        },
        {
          "url": "https://git.kernel.org/stable/c/cfd163169af3be56eaef113c680ea251f0d09189"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c725901908eb1e52a16fc0e2373cb761df42d21"
        },
        {
          "url": "https://git.kernel.org/stable/c/54d56d5b42d2e4c72ba6e365e9774da90698aa22"
        }
      ],
      "title": "drm/vmwgfx: use check_add_overflow for shader size+offset bound",
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  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80887",
    "datePublished": "2026-09-04T17:11:04.063Z",
    "dateReserved": "2026-08-26T14:34:25.799Z",
    "dateUpdated": "2026-09-04T17:11:04.063Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-05T00:25:14Z",
      "cve": "CVE-2026-80887",
      "id": "CVE-2026-80887",
      "initial_release_date": "2026-09-05T00:25:14Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80887",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80887.json",
      "version": "2"
    }
  }
}

FKIE_CVE-2026-80887

Vulnerability from fkie_nvd - Published: 2026-09-04 18:17 - Updated: 2026-09-04 18:17

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1bbe7751f5ebac383405ef29a66622d65bd505d3
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/54d56d5b42d2e4c72ba6e365e9774da90698aa22
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5c725901908eb1e52a16fc0e2373cb761df42d21
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cfd163169af3be56eaef113c680ea251f0d09189
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d3f44438aa805270aaead3b6840ccaea0f4c11f9

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/vmwgfx/vmwgfx_shader.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1bbe7751f5ebac383405ef29a66622d65bd505d3",
              "status": "affected",
              "version": "668b206601c5f5063e03b76784a0d3024fa2b249",
              "versionType": "git"
            },
            {
              "lessThan": "d3f44438aa805270aaead3b6840ccaea0f4c11f9",
              "status": "affected",
              "version": "668b206601c5f5063e03b76784a0d3024fa2b249",
              "versionType": "git"
            },
            {
              "lessThan": "cfd163169af3be56eaef113c680ea251f0d09189",
              "status": "affected",
              "version": "668b206601c5f5063e03b76784a0d3024fa2b249",
              "versionType": "git"
            },
            {
              "lessThan": "5c725901908eb1e52a16fc0e2373cb761df42d21",
              "status": "affected",
              "version": "668b206601c5f5063e03b76784a0d3024fa2b249",
              "versionType": "git"
            },
            {
              "lessThan": "54d56d5b42d2e4c72ba6e365e9774da90698aa22",
              "status": "affected",
              "version": "668b206601c5f5063e03b76784a0d3024fa2b249",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/vmwgfx/vmwgfx_shader.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.151",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: use check_add_overflow for shader size+offset bound\n\nvmw_shader_define() validates the user-supplied shader window against\nits backing buffer with\n\n\t(u64)buffer-\u003etbo.base.size \u003c (u64)size + (u64)offset\n\ndrm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is\nnear U64_MAX the unsigned addition wraps and the resulting tiny value\npasses the check.  The unbounded offset is then stored in\nres-\u003eguest_memory_offset and forwarded to host SVGA shader-create\ncommands.\n\nUse check_add_overflow() to detect the wrap and compare the resulting\nendpoint against the buffer size."
    }
  ],
  "id": "CVE-2026-80887",
  "lastModified": "2026-09-04T18:17:56.667",
  "metrics": {},
  "published": "2026-09-04T18:17:56.667",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1bbe7751f5ebac383405ef29a66622d65bd505d3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/54d56d5b42d2e4c72ba6e365e9774da90698aa22"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5c725901908eb1e52a16fc0e2373cb761df42d21"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cfd163169af3be56eaef113c680ea251f0d09189"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d3f44438aa805270aaead3b6840ccaea0f4c11f9"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-377R-P949-GF93

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/vmwgfx: use check_add_overflow for shader size+offset bound

vmw_shader_define() validates the user-supplied shader window against its backing buffer with

(u64)buffer->tbo.base.size < (u64)size + (u64)offset

drm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is near U64_MAX the unsigned addition wraps and the resulting tiny value passes the check. The unbounded offset is then stored in res->guest_memory_offset and forwarded to host SVGA shader-create commands.

Use check_add_overflow() to detect the wrap and compare the resulting endpoint against the buffer size.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-80887"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T18:17:56Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: use check_add_overflow for shader size+offset bound\n\nvmw_shader_define() validates the user-supplied shader window against\nits backing buffer with\n\n\t(u64)buffer-\u003etbo.base.size \u003c (u64)size + (u64)offset\n\ndrm_vmw_shader_create_arg::offset is __u64 in the uapi; when it is\nnear U64_MAX the unsigned addition wraps and the resulting tiny value\npasses the check.  The unbounded offset is then stored in\nres-\u003eguest_memory_offset and forwarded to host SVGA shader-create\ncommands.\n\nUse check_add_overflow() to detect the wrap and compare the resulting\nendpoint against the buffer size.",
  "id": "GHSA-377r-p949-gf93",
  "modified": "2026-09-04T18:31:33Z",
  "published": "2026-09-04T18:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80887"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bbe7751f5ebac383405ef29a66622d65bd505d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54d56d5b42d2e4c72ba6e365e9774da90698aa22"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c725901908eb1e52a16fc0e2373cb761df42d21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfd163169af3be56eaef113c680ea251f0d09189"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3f44438aa805270aaead3b6840ccaea0f4c11f9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-80887 (GCVE-0-2026-80887)

FKIE_CVE-2026-80887

GHSA-377R-P949-GF93

Tags

Sightings

Nomenclature