Vulnerability-Lookup

GHSA-H697-4WX8-5625

Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-05-30 12:30

Details

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

media: iris: Fix use-after-free in iris_release_internal_buffers()

The recent change in commit 1dabf00ee206 ("media: iris: gen1: Destroy internal buffers after FW releases") introduced a regression where session_release_buf() may free the buffer. The caller, iris_release_internal_buffers(), continued to access buffer after the call, leading to a potential use-after-free.

Fix this by setting BUF_ATTR_PENDING_RELEASE before calling session_release_buf(), and reverting the flag if the call fails. This ensures no dereference occurs after potential freeing.

Severity

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-46240"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:39Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: iris: Fix use-after-free in iris_release_internal_buffers()\n\nThe recent change in commit 1dabf00ee206 (\"media: iris: gen1: Destroy\ninternal buffers after FW releases\") introduced a regression where\nsession_release_buf() may free the buffer. The caller,\niris_release_internal_buffers(), continued to access `buffer` after the\ncall, leading to a potential use-after-free.\n\nFix this by setting BUF_ATTR_PENDING_RELEASE before calling\nsession_release_buf(), and reverting the flag if the call fails. This\nensures no dereference occurs after potential freeing.",
  "id": "GHSA-h697-4wx8-5625",
  "modified": "2026-05-30T12:30:26Z",
  "published": "2026-05-28T12:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46240"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18c64439f249859b6140f7bf8bcf95c8ed841f28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd24998a4a4016fb9921916024399bd80f0d45c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f27cfdcfc916bb59297825805f4c3499f89f9e76"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-46240 (GCVE-0-2026-46240)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:41 – Updated: 2026-08-05 12:30

Title

media: iris: Fix use-after-free in iris_release_internal_buffers()

Summary

In the Linux kernel, the following vulnerability has been resolved: media: iris: Fix use-after-free in iris_release_internal_buffers() The recent change in commit 1dabf00ee206 ("media: iris: gen1: Destroy internal buffers after FW releases") introduced a regression where session_release_buf() may free the buffer. The caller, iris_release_internal_buffers(), continued to access `buffer` after the call, leading to a potential use-after-free. Fix this by setting BUF_ATTR_PENDING_RELEASE before calling session_release_buf(), and reverting the flag if the call fails. This ensures no dereference occurs after potential freeing.

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 mitre root Scorecard

References

3 references

URL	Tags
https://git.kernel.org/stable/c/dd24998a4a4016fb9…
https://git.kernel.org/stable/c/18c64439f249859b6…
https://git.kernel.org/stable/c/f27cfdcfc916bb592…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7cde76db8883ec8a3d1456068079ecadbfb15ca5 , < dd24998a4a4016fb9921916024399bd80f0d45c6 (git) Affected: 1dabf00ee206eceb0f08a1fe5d1ce635f9064338 , < 18c64439f249859b6140f7bf8bcf95c8ed841f28 (git) Affected: 1dabf00ee206eceb0f08a1fe5d1ce635f9064338 , < f27cfdcfc916bb59297825805f4c3499f89f9e76 (git) Affected: d4457f23ac0130240053a34be663f0fade3bb371 (git) Affected: 6.18.16 , < 6.18.32 (semver) Affected: 6.19.6 , < 6.20 (semver)
Linux	Linux	Affected: 7.0 Unaffected: 0 , < 7.0 (semver) Unaffected: 6.18.32 , ≤ 6.18.* (semver) Unaffected: 7.0.9 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/qcom/iris/iris_buffer.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "dd24998a4a4016fb9921916024399bd80f0d45c6",
              "status": "affected",
              "version": "7cde76db8883ec8a3d1456068079ecadbfb15ca5",
              "versionType": "git"
            },
            {
              "lessThan": "18c64439f249859b6140f7bf8bcf95c8ed841f28",
              "status": "affected",
              "version": "1dabf00ee206eceb0f08a1fe5d1ce635f9064338",
              "versionType": "git"
            },
            {
              "lessThan": "f27cfdcfc916bb59297825805f4c3499f89f9e76",
              "status": "affected",
              "version": "1dabf00ee206eceb0f08a1fe5d1ce635f9064338",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d4457f23ac0130240053a34be663f0fade3bb371",
              "versionType": "git"
            },
            {
              "lessThan": "6.18.32",
              "status": "affected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThan": "6.20",
              "status": "affected",
              "version": "6.19.6",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/platform/qcom/iris/iris_buffer.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "lessThan": "7.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.32",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.32",
                  "versionStartIncluding": "6.18.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.9",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.19.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: iris: Fix use-after-free in iris_release_internal_buffers()\n\nThe recent change in commit 1dabf00ee206 (\"media: iris: gen1: Destroy\ninternal buffers after FW releases\") introduced a regression where\nsession_release_buf() may free the buffer. The caller,\niris_release_internal_buffers(), continued to access `buffer` after the\ncall, leading to a potential use-after-free.\n\nFix this by setting BUF_ATTR_PENDING_RELEASE before calling\nsession_release_buf(), and reverting the flag if the call fails. This\nensures no dereference occurs after potential freeing."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "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 - The vulnerable code is reached only via VIDIOC_STREAMON and related ioctls on the iris V4L2 device node (/dev/videoN); it requires local access to that device, not a network path.\nAC:L - This is a sequential use-after-free, not a race; the attacker drives a decode session and supplies a bitstream with a resolution change to reliably reach the release/free path on gen1 hardware.\nPR:L - Triggering the path needs an open handle to the iris video device (e.g. video-group access, or the codec/media context on Android) but no real root or capability check exists along the path.\nUI:N - The attacker performs all ioctls and supplies the input bitstream directly; no separate victim action is required.\nS:U - The corruption stays within the kernel\u0027s own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The use-after-free lets the attacker groom and control the contents of the freed struct iris_buffer slot, enabling kernel memory disclosure.\nI:H - The post-free read-modify-write into the freed slab object can corrupt an adjacent reallocated structure, giving a UAF write primitive exploitable for control-flow/data corruption.\nA:H - The use-after-free reliably leads to slab corruption and kernel oops/panic, a high availability impact."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:30:40.467Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/dd24998a4a4016fb9921916024399bd80f0d45c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/18c64439f249859b6140f7bf8bcf95c8ed841f28"
        },
        {
          "url": "https://git.kernel.org/stable/c/f27cfdcfc916bb59297825805f4c3499f89f9e76"
        }
      ],
      "title": "media: iris: Fix use-after-free in iris_release_internal_buffers()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46240",
    "datePublished": "2026-05-28T09:41:08.376Z",
    "dateReserved": "2026-05-13T15:03:33.107Z",
    "dateUpdated": "2026-08-05T12:30:40.467Z",
    "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.

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.

Action not permitted

GHSA-H697-4WX8-5625

CVE-2026-46240 (GCVE-0-2026-46240)

Tags

Sightings

Nomenclature

Related by attack behaviour