Vulnerability-Lookup

FKIE_CVE-2026-89900

Vulnerability from fkie_nvd - Published: 2026-09-16 11:16 - Updated: 2026-09-16 11:16

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: media: cec: core: Fix kmemleak due to missed rc_free_device() call The commit dccc0c3ddf8f ("media: rc: fix race between unregister and urb/irq callbacks") removed the implicit call to rc_free_device() from rc_unregister_device(). However, the commit missed to remove the NULL assignment of adap->rc that is now causing rc_free_device() to never be called on an allocated rc device. kmemleak reports following after e.g. dw-hdmi unbind: unreferenced object 0xffff00010ac10000 (size 4096): comm "kworker/u16:1", pid 39, jiffies 4294897739 hex dump (first 32 bytes): 20 23 4b 0a 01 00 ff ff 08 00 c1 0a 01 00 ff ff #K............. 08 00 c1 0a 01 00 ff ff 00 00 00 00 00 00 00 00 ................ backtrace (crc e11baccc): kmemleak_alloc+0x38/0x44 __kmalloc_cache_noprof+0x4a8/0x5e0 rc_allocate_device+0x48/0x2a0 cec_allocate_adapter+0x3ac/0x800 dw_hdmi_cec_probe+0x264/0x634 platform_probe+0xc0/0x188 really_probe+0x4a4/0x8e0 __driver_probe_device+0x2f8/0x440 driver_probe_device+0x60/0x160 __device_attach_driver+0x1a0/0x2a0 bus_for_each_drv+0x100/0x1a0 __device_attach+0x174/0x350 device_initial_probe+0x90/0xb0 bus_probe_device+0x4c/0x120 device_add+0xdec/0x116c platform_device_add+0x354/0x598 Remove the assignment of adap->rc to NULL to let cec_delete_adapter() free the allocated rc device after last user of the cec device exits to fix the kmemleak.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/695063fc57574dd117b1bc750ca189cf03a2caad
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/954ee95a03b4d31d4505591bfaba02c24b75776b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a24ba0653f7154e671dc8d2bf64682ab2d042792
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f28a8e1ba4d67a18e4662e5acefd5a4389322366

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/cec/core/cec-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "954ee95a03b4d31d4505591bfaba02c24b75776b",
              "status": "affected",
              "version": "a7becb58f6b8a3a3efe5d3acfd52e2c107de6772",
              "versionType": "git"
            },
            {
              "lessThan": "f28a8e1ba4d67a18e4662e5acefd5a4389322366",
              "status": "affected",
              "version": "75977f5f5c4974c72bbedefbf09ad33ebbaa36f1",
              "versionType": "git"
            },
            {
              "lessThan": "695063fc57574dd117b1bc750ca189cf03a2caad",
              "status": "affected",
              "version": "e250b672d40a9e0d97a8895cbb301248bea0fce6",
              "versionType": "git"
            },
            {
              "lessThan": "cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c",
              "status": "affected",
              "version": "dccc0c3ddf8f16071736f98a7d6dd46a2d43e037",
              "versionType": "git"
            },
            {
              "lessThan": "a24ba0653f7154e671dc8d2bf64682ab2d042792",
              "status": "affected",
              "version": "dccc0c3ddf8f16071736f98a7d6dd46a2d43e037",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.157",
              "status": "affected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.110",
              "status": "affected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.51",
              "status": "affected",
              "version": "6.18.35",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/cec/core/cec-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: core: Fix kmemleak due to missed rc_free_device() call\n\nThe commit dccc0c3ddf8f (\"media: rc: fix race between unregister and\nurb/irq callbacks\") removed the implicit call to rc_free_device() from\nrc_unregister_device(). However, the commit missed to remove the NULL\nassignment of adap-\u003erc that is now causing rc_free_device() to never be\ncalled on an allocated rc device.\n\nkmemleak reports following after e.g. dw-hdmi unbind:\n\nunreferenced object 0xffff00010ac10000 (size 4096):\n  comm \"kworker/u16:1\", pid 39, jiffies 4294897739\n  hex dump (first 32 bytes):\n    20 23 4b 0a 01 00 ff ff 08 00 c1 0a 01 00 ff ff   #K.............\n    08 00 c1 0a 01 00 ff ff 00 00 00 00 00 00 00 00  ................\n  backtrace (crc e11baccc):\n    kmemleak_alloc+0x38/0x44\n    __kmalloc_cache_noprof+0x4a8/0x5e0\n    rc_allocate_device+0x48/0x2a0\n    cec_allocate_adapter+0x3ac/0x800\n    dw_hdmi_cec_probe+0x264/0x634\n    platform_probe+0xc0/0x188\n    really_probe+0x4a4/0x8e0\n    __driver_probe_device+0x2f8/0x440\n    driver_probe_device+0x60/0x160\n    __device_attach_driver+0x1a0/0x2a0\n    bus_for_each_drv+0x100/0x1a0\n    __device_attach+0x174/0x350\n    device_initial_probe+0x90/0xb0\n    bus_probe_device+0x4c/0x120\n    device_add+0xdec/0x116c\n    platform_device_add+0x354/0x598\n\nRemove the assignment of adap-\u003erc to NULL to let cec_delete_adapter()\nfree the allocated rc device after last user of the cec device exits to\nfix the kmemleak."
    }
  ],
  "id": "CVE-2026-89900",
  "lastModified": "2026-09-16T11:16:58.880",
  "metrics": {},
  "published": "2026-09-16T11:16:58.880",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/695063fc57574dd117b1bc750ca189cf03a2caad"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/954ee95a03b4d31d4505591bfaba02c24b75776b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a24ba0653f7154e671dc8d2bf64682ab2d042792"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f28a8e1ba4d67a18e4662e5acefd5a4389322366"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-89900 (GCVE-0-2026-89900)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:32 – Updated: 2026-09-16 10:32

Title

media: cec: core: Fix kmemleak due to missed rc_free_device() call

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/954ee95a03b4d31d4…
https://git.kernel.org/stable/c/f28a8e1ba4d67a18e…
https://git.kernel.org/stable/c/695063fc57574dd11…
https://git.kernel.org/stable/c/cca2407794795cecf…
https://git.kernel.org/stable/c/a24ba0653f7154e67…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a7becb58f6b8a3a3efe5d3acfd52e2c107de6772 , < 954ee95a03b4d31d4505591bfaba02c24b75776b (git) Affected: 75977f5f5c4974c72bbedefbf09ad33ebbaa36f1 , < f28a8e1ba4d67a18e4662e5acefd5a4389322366 (git) Affected: e250b672d40a9e0d97a8895cbb301248bea0fce6 , < 695063fc57574dd117b1bc750ca189cf03a2caad (git) Affected: dccc0c3ddf8f16071736f98a7d6dd46a2d43e037 , < cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c (git) Affected: dccc0c3ddf8f16071736f98a7d6dd46a2d43e037 , < a24ba0653f7154e671dc8d2bf64682ab2d042792 (git) Affected: 6.6.143 , < 6.6.157 (semver) Affected: 6.12.93 , < 6.12.110 (semver) Affected: 6.18.35 , < 6.18.51 (semver)
Linux	Linux	Affected: 7.1 Unaffected: 0 , < 7.1 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/cec/core/cec-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "954ee95a03b4d31d4505591bfaba02c24b75776b",
              "status": "affected",
              "version": "a7becb58f6b8a3a3efe5d3acfd52e2c107de6772",
              "versionType": "git"
            },
            {
              "lessThan": "f28a8e1ba4d67a18e4662e5acefd5a4389322366",
              "status": "affected",
              "version": "75977f5f5c4974c72bbedefbf09ad33ebbaa36f1",
              "versionType": "git"
            },
            {
              "lessThan": "695063fc57574dd117b1bc750ca189cf03a2caad",
              "status": "affected",
              "version": "e250b672d40a9e0d97a8895cbb301248bea0fce6",
              "versionType": "git"
            },
            {
              "lessThan": "cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c",
              "status": "affected",
              "version": "dccc0c3ddf8f16071736f98a7d6dd46a2d43e037",
              "versionType": "git"
            },
            {
              "lessThan": "a24ba0653f7154e671dc8d2bf64682ab2d042792",
              "status": "affected",
              "version": "dccc0c3ddf8f16071736f98a7d6dd46a2d43e037",
              "versionType": "git"
            },
            {
              "lessThan": "6.6.157",
              "status": "affected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.110",
              "status": "affected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.51",
              "status": "affected",
              "version": "6.18.35",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/cec/core/cec-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "6.6.143",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.12.93",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
                  "versionStartIncluding": "6.18.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: core: Fix kmemleak due to missed rc_free_device() call\n\nThe commit dccc0c3ddf8f (\"media: rc: fix race between unregister and\nurb/irq callbacks\") removed the implicit call to rc_free_device() from\nrc_unregister_device(). However, the commit missed to remove the NULL\nassignment of adap-\u003erc that is now causing rc_free_device() to never be\ncalled on an allocated rc device.\n\nkmemleak reports following after e.g. dw-hdmi unbind:\n\nunreferenced object 0xffff00010ac10000 (size 4096):\n  comm \"kworker/u16:1\", pid 39, jiffies 4294897739\n  hex dump (first 32 bytes):\n    20 23 4b 0a 01 00 ff ff 08 00 c1 0a 01 00 ff ff   #K.............\n    08 00 c1 0a 01 00 ff ff 00 00 00 00 00 00 00 00  ................\n  backtrace (crc e11baccc):\n    kmemleak_alloc+0x38/0x44\n    __kmalloc_cache_noprof+0x4a8/0x5e0\n    rc_allocate_device+0x48/0x2a0\n    cec_allocate_adapter+0x3ac/0x800\n    dw_hdmi_cec_probe+0x264/0x634\n    platform_probe+0xc0/0x188\n    really_probe+0x4a4/0x8e0\n    __driver_probe_device+0x2f8/0x440\n    driver_probe_device+0x60/0x160\n    __device_attach_driver+0x1a0/0x2a0\n    bus_for_each_drv+0x100/0x1a0\n    __device_attach+0x174/0x350\n    device_initial_probe+0x90/0xb0\n    bus_probe_device+0x4c/0x120\n    device_add+0xdec/0x116c\n    platform_device_add+0x354/0x598\n\nRemove the assignment of adap-\u003erc to NULL to let cec_delete_adapter()\nfree the allocated rc device after last user of the cec device exits to\nfix the kmemleak."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T10:32:00.289Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/954ee95a03b4d31d4505591bfaba02c24b75776b"
        },
        {
          "url": "https://git.kernel.org/stable/c/f28a8e1ba4d67a18e4662e5acefd5a4389322366"
        },
        {
          "url": "https://git.kernel.org/stable/c/695063fc57574dd117b1bc750ca189cf03a2caad"
        },
        {
          "url": "https://git.kernel.org/stable/c/cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a24ba0653f7154e671dc8d2bf64682ab2d042792"
        }
      ],
      "title": "media: cec: core: Fix kmemleak due to missed rc_free_device() call",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89900",
    "datePublished": "2026-09-16T10:32:00.289Z",
    "dateReserved": "2026-09-11T19:38:34.774Z",
    "dateUpdated": "2026-09-16T10:32:00.289Z",
    "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.
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FKIE_CVE-2026-89900

CVE-2026-89900 (GCVE-0-2026-89900)

Tags

Sightings

Nomenclature

Related by attack behaviour