Vulnerability-Lookup

FKIE_CVE-2022-48899

Vulnerability from fkie_nvd - Published: 2024-08-21 07:15 - Updated: 2026-08-04 10:17

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Fix GEM handle creation UAF Userspace can guess the handle value and try to race GEM object creation with handle close, resulting in a use-after-free if we dereference the object after dropping the handle's reference. For that reason, dropping the handle's reference must be done *after* we are done dereferencing the object.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/011ecdbcd520c90c344b872ca6b4821f7783b2f8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/19ec87d06acfab2313ee82b2a689bf0c154e57ea	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/52531258318ed59a2dc5a43df2eaf0eb1d65438e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/68bcd063857075d2f9edfed6024387ac377923e2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/adc48e5e408afbb01d261bd303fd9fbbbaa3e317	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.2
linux	linux_kernel	6.2
linux	linux_kernel	6.2

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/virtio/virtgpu_ioctl.c"
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    },
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    }
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  "id": "CVE-2022-48899",
  "lastModified": "2026-08-04T10:17:25.770",
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}

CVE-2022-48899 (GCVE-0-2022-48899)

Vulnerability from cvelistv5 – Published: 2024-08-21 06:10 – Updated: 2026-08-05 08:52

Title

drm/virtio: Fix GEM handle creation UAF

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 16:03 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7018 records in the last 180 days details

References

6 references

URL	Tags
https://git.kernel.org/stable/c/19ec87d06acfab231…
https://git.kernel.org/stable/c/d01d6d2b06c0d8390…
https://git.kernel.org/stable/c/68bcd063857075d2f…
https://git.kernel.org/stable/c/011ecdbcd520c90c3…
https://git.kernel.org/stable/c/adc48e5e408afbb01…
https://git.kernel.org/stable/c/52531258318ed59a2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < 19ec87d06acfab2313ee82b2a689bf0c154e57ea (git) Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73 (git) Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < 68bcd063857075d2f9edfed6024387ac377923e2 (git) Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < 011ecdbcd520c90c344b872ca6b4821f7783b2f8 (git) Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < adc48e5e408afbb01d261bd303fd9fbbbaa3e317 (git) Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < 52531258318ed59a2dc5a43df2eaf0eb1d65438e (git)
Linux	Linux	Affected: 4.4 Unaffected: 0 , < 4.4 (semver) Unaffected: 4.19.270 , ≤ 4.19.* (semver) Unaffected: 5.4.229 , ≤ 5.4.* (semver) Unaffected: 5.10.164 , ≤ 5.10.* (semver) Unaffected: 5.15.89 , ≤ 5.15.* (semver) Unaffected: 6.1.7 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
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            {
              "lang": "en",
              "value": "AV:L - Reachable only via local DRM ioctls (VIRTGPU_RESOURCE_CREATE / RESOURCE_CREATE_BLOB and GEM_CLOSE) on `/dev/dri/renderD*` or the primary node; not via network packet processing.\nAC:L - The attacker controls both sides of the race\u2014issuing resource-create while another thread closes a predicted sequential GEM handle IDR value\u2014so success does not depend on external conditions beyond attacker influence.\nPR:L - The vulnerable ioctls are marked DRM_RENDER_ALLOW and require only an open render/primary DRM fd, which unprivileged users routinely have; no CAP_SYS_ADMIN or DRM master is required.\nUI:N - The attacker triggers the bug entirely with their own ioctl calls; no separate victim action is needed.\nS:U - The UAF corrupts guest-kernel GEM object state and enables privilege escalation within the same kernel security authority; it is not a guest-to-host/VM escape.\nC:H - Use-after-free of the GEM object after the handle\u2019s last reference is dropped enables reclaim/spray and arbitrary kernel memory disclosure, including values returned to userspace via res_handle.\nI:H - The same UAF provides a heap corruption primitive that can be turned into arbitrary write / control-flow hijacking in the kernel.\nA:H - Dereferencing the freed GEM object can oops/panic the kernel even when not fully exploited for code execution."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:52:50.499Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/19ec87d06acfab2313ee82b2a689bf0c154e57ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73"
        },
        {
          "url": "https://git.kernel.org/stable/c/68bcd063857075d2f9edfed6024387ac377923e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/011ecdbcd520c90c344b872ca6b4821f7783b2f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/adc48e5e408afbb01d261bd303fd9fbbbaa3e317"
        },
        {
          "url": "https://git.kernel.org/stable/c/52531258318ed59a2dc5a43df2eaf0eb1d65438e"
        }
      ],
      "title": "drm/virtio: Fix GEM handle creation UAF",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48899",
    "datePublished": "2024-08-21T06:10:31.936Z",
    "dateReserved": "2024-08-21T06:06:23.291Z",
    "dateUpdated": "2026-08-05T08:52:50.499Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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