github - ghsa-w8v8-pp27-rwcg

ghsa-w8v8-pp27-rwcg

Vulnerability from github

Published

2024-08-21 09:31

Modified

2024-09-06 15:32

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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

drm/vmwgfx: Remove rcu locks from user resources

User resource lookups used rcu to avoid two extra atomics. Unfortunately the rcu paths were buggy and it was easy to make the driver crash by submitting command buffers from two different threads. Because the lookups never show up in performance profiles replace them with a regular spin lock which fixes the races in accesses to those shared resources.

Fixes kernel oops'es in IGT's vmwgfx execution_buffer stress test and seen crashes with apps using shared resources.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2022-48887"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-21T07:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Remove rcu locks from user resources\n\nUser resource lookups used rcu to avoid two extra atomics. Unfortunately\nthe rcu paths were buggy and it was easy to make the driver crash by\nsubmitting command buffers from two different threads. Because the\nlookups never show up in performance profiles replace them with a\nregular spin lock which fixes the races in accesses to those shared\nresources.\n\nFixes kernel oops\u0027es in IGT\u0027s vmwgfx execution_buffer stress test and\nseen crashes with apps using shared resources.",
  "id": "GHSA-w8v8-pp27-rwcg",
  "modified": "2024-09-06T15:32:56Z",
  "published": "2024-08-21T09:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48887"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ac9578e45b20e3f3c0c8eb71f5417a499a7226a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a309c7194e8a2f8bd4539b9449917913f6c2cd50"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2022-48887

Vulnerability from cvelistv5

Published

2024-08-21 06:10

Modified

2024-12-19 08:09

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Remove rcu locks from user resources User resource lookups used rcu to avoid two extra atomics. Unfortunately the rcu paths were buggy and it was easy to make the driver crash by submitting command buffers from two different threads. Because the lookups never show up in performance profiles replace them with a regular spin lock which fixes the races in accesses to those shared resources. Fixes kernel oops'es in IGT's vmwgfx execution_buffer stress test and seen crashes with apps using shared resources.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/7ac9578e45b20e3f3c0c8eb71f5417a499a7226a
	https://git.kernel.org/stable/c/a309c7194e8a2f8bd4539b9449917913f6c2cd50

Impacted products

Vendor

Product

Version

▼

Linux

Version: e14c02e6b6990e9f6ee18a214a22ac26bae1b25e
Version: e14c02e6b6990e9f6ee18a214a22ac26bae1b25e

Linux

Version: 4.20

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-48887",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T16:04:35.491654Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:32:51.743Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/vmwgfx/ttm_object.c",
            "drivers/gpu/drm/vmwgfx/ttm_object.h",
            "drivers/gpu/drm/vmwgfx/vmwgfx_bo.c",
            "drivers/gpu/drm/vmwgfx/vmwgfx_drv.h",
            "drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c",
            "drivers/gpu/drm/vmwgfx/vmwgfx_resource.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7ac9578e45b20e3f3c0c8eb71f5417a499a7226a",
              "status": "affected",
              "version": "e14c02e6b6990e9f6ee18a214a22ac26bae1b25e",
              "versionType": "git"
            },
            {
              "lessThan": "a309c7194e8a2f8bd4539b9449917913f6c2cd50",
              "status": "affected",
              "version": "e14c02e6b6990e9f6ee18a214a22ac26bae1b25e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/vmwgfx/ttm_object.c",
            "drivers/gpu/drm/vmwgfx/ttm_object.h",
            "drivers/gpu/drm/vmwgfx/vmwgfx_bo.c",
            "drivers/gpu/drm/vmwgfx/vmwgfx_drv.h",
            "drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c",
            "drivers/gpu/drm/vmwgfx/vmwgfx_resource.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Remove rcu locks from user resources\n\nUser resource lookups used rcu to avoid two extra atomics. Unfortunately\nthe rcu paths were buggy and it was easy to make the driver crash by\nsubmitting command buffers from two different threads. Because the\nlookups never show up in performance profiles replace them with a\nregular spin lock which fixes the races in accesses to those shared\nresources.\n\nFixes kernel oops\u0027es in IGT\u0027s vmwgfx execution_buffer stress test and\nseen crashes with apps using shared resources."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T08:09:52.796Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7ac9578e45b20e3f3c0c8eb71f5417a499a7226a"
        },
        {
          "url": "https://git.kernel.org/stable/c/a309c7194e8a2f8bd4539b9449917913f6c2cd50"
        }
      ],
      "title": "drm/vmwgfx: Remove rcu locks from user resources",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48887",
    "datePublished": "2024-08-21T06:10:19.073Z",
    "dateReserved": "2024-08-21T06:06:23.290Z",
    "dateUpdated": "2024-12-19T08:09:52.796Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted