Vulnerability-Lookup

GHSA-VQ32-RV69-WV5X

Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-14 15:32

Details

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

fbdev: omapfb: panel-dsi-cm: initialize lock before registering display

dsicm_probe() registers the display before initializing ddata->lock. Once omapdss_register_display() publishes the display, another consumer can reach a dsicm callback that takes this mutex while it is still uninitialized.

Initialize the mutex before registering the display so the published callbacks always see a valid lock.

Severity

8.4 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89599"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-11T20:19:44Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: omapfb: panel-dsi-cm: initialize lock before registering display\n\ndsicm_probe() registers the display before initializing ddata-\u003elock.\nOnce omapdss_register_display() publishes the display, another consumer\ncan reach a dsicm callback that takes this mutex while it is still\nuninitialized.\n\nInitialize the mutex before registering the display so the published\ncallbacks always see a valid lock.",
  "id": "GHSA-vq32-rv69-wv5x",
  "modified": "2026-09-14T15:32:31Z",
  "published": "2026-09-11T21:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89599"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09db79078f25c048cfb5d7849795c70415ab8574"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c3f8c9c995db185284b079f39177e85b2258176"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/302d19fbc7dc7e9f498930c66d65ff711ba5ba9f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76818e81cfcae33b09b739de09162c7d8d89bf0b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7023d18c4eb292f886b31a3576402cb0e357df7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef20d4e17d7fb0d83144caa9667e6f3198288993"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f33a96e49284589257e90ddc4394ec0c6bf11ec4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8e43fe0f22b7137ce456e6fe3581d3098174f74"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-89599 (GCVE-0-2026-89599)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:45 – Updated: 2026-09-14 12:01

Title

fbdev: omapfb: panel-dsi-cm: initialize lock before registering display

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev: omapfb: panel-dsi-cm: initialize lock before registering display dsicm_probe() registers the display before initializing ddata->lock. Once omapdss_register_display() publishes the display, another consumer can reach a dsicm callback that takes this mutex while it is still uninitialized. Initialize the mutex before registering the display so the published callbacks always see a valid lock.

Severity

8.4 (High)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/ef20d4e17d7fb0d83…
https://git.kernel.org/stable/c/e7023d18c4eb292f8…
https://git.kernel.org/stable/c/f33a96e4928458925…
https://git.kernel.org/stable/c/302d19fbc7dc7e9f4…
https://git.kernel.org/stable/c/2c3f8c9c995db1852…
https://git.kernel.org/stable/c/76818e81cfcae33b0…
https://git.kernel.org/stable/c/09db79078f25c048c…
https://git.kernel.org/stable/c/f8e43fe0f22b7137c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f76ee892a99e68b55402b8d4b8aeffcae2aff34d , < ef20d4e17d7fb0d83144caa9667e6f3198288993 (git) Affected: f76ee892a99e68b55402b8d4b8aeffcae2aff34d , < e7023d18c4eb292f886b31a3576402cb0e357df7 (git) Affected: f76ee892a99e68b55402b8d4b8aeffcae2aff34d , < f33a96e49284589257e90ddc4394ec0c6bf11ec4 (git) Affected: f76ee892a99e68b55402b8d4b8aeffcae2aff34d , < 302d19fbc7dc7e9f498930c66d65ff711ba5ba9f (git) Affected: f76ee892a99e68b55402b8d4b8aeffcae2aff34d , < 2c3f8c9c995db185284b079f39177e85b2258176 (git) Affected: f76ee892a99e68b55402b8d4b8aeffcae2aff34d , < 76818e81cfcae33b09b739de09162c7d8d89bf0b (git) Affected: f76ee892a99e68b55402b8d4b8aeffcae2aff34d , < 09db79078f25c048cfb5d7849795c70415ab8574 (git) Affected: f76ee892a99e68b55402b8d4b8aeffcae2aff34d , < f8e43fe0f22b7137ce456e6fe3581d3098174f74 (git)
Linux	Linux	Affected: 4.5 Unaffected: 0 , < 4.5 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.109 , ≤ 6.12.* (semver) Unaffected: 6.18.50 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ef20d4e17d7fb0d83144caa9667e6f3198288993",
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              "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d",
              "versionType": "git"
            },
            {
              "lessThan": "e7023d18c4eb292f886b31a3576402cb0e357df7",
              "status": "affected",
              "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d",
              "versionType": "git"
            },
            {
              "lessThan": "f33a96e49284589257e90ddc4394ec0c6bf11ec4",
              "status": "affected",
              "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d",
              "versionType": "git"
            },
            {
              "lessThan": "302d19fbc7dc7e9f498930c66d65ff711ba5ba9f",
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              "versionType": "git"
            },
            {
              "lessThan": "2c3f8c9c995db185284b079f39177e85b2258176",
              "status": "affected",
              "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d",
              "versionType": "git"
            },
            {
              "lessThan": "76818e81cfcae33b09b739de09162c7d8d89bf0b",
              "status": "affected",
              "version": "f76ee892a99e68b55402b8d4b8aeffcae2aff34d",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.5"
            },
            {
              "lessThan": "4.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
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                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                },
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                },
                {
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "4.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "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\nfbdev: omapfb: panel-dsi-cm: initialize lock before registering display\n\ndsicm_probe() registers the display before initializing ddata-\u003elock.\nOnce omapdss_register_display() publishes the display, another consumer\ncan reach a dsicm callback that takes this mutex while it is still\nuninitialized.\n\nInitialize the mutex before registering the display so the published\ncallbacks always see a valid lock."
        }
      ],
      "metrics": [
        {
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            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is in the OMAP DSI command-mode panel driver: dsicm_probe() publishes dsicm_ops via omapdss_register_display(), and those callbacks are reached from local omapfb probe, FBIOBLANK, and omapfb ioctls on /dev/fb*. There is no network, Bluetooth/WiFi, or USB protocol path into this code.\nAC:L - On preemptible kernels dsicm_probe() can be preempted after omapdss_register_display() adds the panel to panel_list and before mutex_init(\u0026ddata-\u003elock). Concurrent omapfb_probe then calls dsicm_enable/enable_te/update on that published device, so the race is driven by the in-kernel consumer rather than an uninfluenced hardware lottery.\nPR:N - dsicm_probe() and the omapfb consumer (omapfb_init_display \u2192 driver-\u003eenable/update) run from platform/deferred probe during boot on boards with an omapdss,panel-dsi-cm node. That path has no capable() or credential check and needs no OS account.\nUI:N - Display registration and omapfb\u2019s subsequent enable/update run automatically during device enumeration on affected TI OMAP systems; no victim must open /dev/fb*, write sysfs, or mount a filesystem.\nS:U - Uninitialized-mutex use and any follow-on lock or DSI-state corruption remain inside the host omapfb/omapdss driver. This is not a VM escape, IOMMU bypass, or other cross-authority impact.\nC:H - A consumer that wins the race mutex_lock()s kzalloc\u2019d ddata-\u003elock (NULL wait_list); probe can then mutex_init() a lock another thread still holds so two threads enter dsicm_enable/update. That lock-state corruption is kernel memory-unsafety that can be leveraged for disclosure, not a small bounded leak.\nI:H - mutex_init() of a mutex another thread still holds resets owner and wait_list while dsicm callbacks run unsynchronized against DSI bus and panel_drv_data state, giving write and control-flow primitives rather than a pure crash.\nA:H - CONFIG_DEBUG_MUTEXES treats lock-used-without-init as an oops, and a corrupted mutex wait_list or double-entry into DSI enable/disable causes a kernel oops, panic, or hang, fully denying availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T12:01:22.440Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ef20d4e17d7fb0d83144caa9667e6f3198288993"
        },
        {
          "url": "https://git.kernel.org/stable/c/e7023d18c4eb292f886b31a3576402cb0e357df7"
        },
        {
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          "url": "https://git.kernel.org/stable/c/302d19fbc7dc7e9f498930c66d65ff711ba5ba9f"
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          "url": "https://git.kernel.org/stable/c/2c3f8c9c995db185284b079f39177e85b2258176"
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        {
          "url": "https://git.kernel.org/stable/c/76818e81cfcae33b09b739de09162c7d8d89bf0b"
        },
        {
          "url": "https://git.kernel.org/stable/c/09db79078f25c048cfb5d7849795c70415ab8574"
        },
        {
          "url": "https://git.kernel.org/stable/c/f8e43fe0f22b7137ce456e6fe3581d3098174f74"
        }
      ],
      "title": "fbdev: omapfb: panel-dsi-cm: initialize lock before registering display",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89599",
    "datePublished": "2026-09-11T19:45:02.112Z",
    "dateReserved": "2026-09-11T19:38:34.731Z",
    "dateUpdated": "2026-09-14T12:01:22.440Z",
    "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.

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

Related by attack behaviour

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