Vulnerability-Lookup

GHSA-F8RF-4VGQ-5FVW

Vulnerability from github – Published: 2025-10-21 12:31 – Updated: 2025-10-21 12:31

Details

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

drm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem

When the mapping is already reaped the unmap must be a no-op, as we would otherwise try to remove the mapping twice, corrupting the involved data structures.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49336"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:10Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem\n\nWhen the mapping is already reaped the unmap must be a no-op, as we\nwould otherwise try to remove the mapping twice, corrupting the involved\ndata structures.",
  "id": "GHSA-f8rf-4vgq-5fvw",
  "modified": "2025-10-21T12:31:25Z",
  "published": "2025-10-21T12:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49336"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03bd455a79f69d97fee3e3b212ab754442f10e5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19323b3671a85788569d15685c8f83a05ec48cbb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/436cff507f2a41230baacc3e2ef1d3b2d2653f40"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/461c0fdf9434188875da9f10cfc86065866bb797"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64f4edec081cb7c97c5e928529d0e1b0dbbffb83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e168c25526cd0368af098095c2ded4a008007e1b"
    }
  ],
  "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-2022-49336 (GCVE-0-2022-49336)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:10 – Updated: 2026-08-05 08:54

Title

drm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem When the mapping is already reaped the unmap must be a no-op, as we would otherwise try to remove the mapping twice, corrupting the involved data structures.

Severity

7.8 (High)


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

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

6 references

URL	Tags
https://git.kernel.org/stable/c/19323b3671a857885…
https://git.kernel.org/stable/c/436cff507f2a41230…
https://git.kernel.org/stable/c/03bd455a79f69d97f…
https://git.kernel.org/stable/c/461c0fdf943418887…
https://git.kernel.org/stable/c/64f4edec081cb7c97…
https://git.kernel.org/stable/c/e168c25526cd0368a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a8c21a5451d831e67b7a6fb910f9ca8bc7b43554 , < 19323b3671a85788569d15685c8f83a05ec48cbb (git) Affected: a8c21a5451d831e67b7a6fb910f9ca8bc7b43554 , < 436cff507f2a41230baacc3e2ef1d3b2d2653f40 (git) Affected: a8c21a5451d831e67b7a6fb910f9ca8bc7b43554 , < 03bd455a79f69d97fee3e3b212ab754442f10e5c (git) Affected: a8c21a5451d831e67b7a6fb910f9ca8bc7b43554 , < 461c0fdf9434188875da9f10cfc86065866bb797 (git) Affected: a8c21a5451d831e67b7a6fb910f9ca8bc7b43554 , < 64f4edec081cb7c97c5e928529d0e1b0dbbffb83 (git) Affected: a8c21a5451d831e67b7a6fb910f9ca8bc7b43554 , < e168c25526cd0368af098095c2ded4a008007e1b (git)
Linux	Linux	Affected: 4.5 Unaffected: 0 , < 4.5 (semver) Unaffected: 5.4.198 , ≤ 5.4.* (semver) Unaffected: 5.10.121 , ≤ 5.10.* (semver) Unaffected: 5.15.46 , ≤ 5.15.* (semver) Unaffected: 5.17.14 , ≤ 5.17.* (semver) Unaffected: 5.18.3 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/etnaviv/etnaviv_mmu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "19323b3671a85788569d15685c8f83a05ec48cbb",
              "status": "affected",
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            },
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554",
              "versionType": "git"
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          "product": "Linux",
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          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.5"
            },
            {
              "lessThan": "4.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.4.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.46",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.17.14",
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              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
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                },
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.3",
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                  "vulnerable": true
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                {
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                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem\n\nWhen the mapping is already reaped the unmap must be a no-op, as we\nwould otherwise try to remove the mapping twice, corrupting the involved\ndata structures."
        }
      ],
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Reachable only via local DRM render-node ioctls (GEM_NEW/GEM_SUBMIT/handle close) on the etnaviv GPU driver; not exposed to network or adjacent attackers.\nAC:L - The race is between mapping reaping and GEM free; an unprivileged attacker controls both sides by concurrently submitting mappings that force IOVA reaping while closing buffers with idle mappings.\nPR:L - All relevant ioctls are DRM_RENDER_ALLOW on a DRIVER_RENDER device, so any unprivileged user with access to /dev/dri/renderD* (typical on etnaviv platforms) can trigger the path without root.\nUI:N - Exploitation requires only the attacker\u0027s own DRM ioctls and threads; no action by another user is needed.\nS:U - Impact is kernel memory corruption and privilege escalation within the same OS security authority; this is not a VM escape or system-IOMMU isolation bypass.\nC:H - Double list_del and double context kref_put yield list corruption and use-after-free of the IOMMU context, which can be leveraged for arbitrary kernel memory disclosure.\nI:H - The same UAF/list-corruption primitives enable heap manipulation and arbitrary kernel writes or control-flow hijacking, matching other DRM MMU UAF scores (e.g. CVE-2022-49359).\nA:H - Double-free/list corruption reliably causes kernel oops/panic even when not fully exploited for code execution."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:54:46.930Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/19323b3671a85788569d15685c8f83a05ec48cbb"
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          "url": "https://git.kernel.org/stable/c/436cff507f2a41230baacc3e2ef1d3b2d2653f40"
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        },
        {
          "url": "https://git.kernel.org/stable/c/e168c25526cd0368af098095c2ded4a008007e1b"
        }
      ],
      "title": "drm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49336",
    "datePublished": "2025-02-26T02:10:55.234Z",
    "dateReserved": "2025-02-26T02:08:31.539Z",
    "dateUpdated": "2026-08-05T08:54:46.930Z",
    "state": "PUBLISHED"
  },
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}

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

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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.
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