CVE-2025-68808 (GCVE-0-2025-68808)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-01-13 15:29
VLAI?
Title
media: vidtv: initialize local pointers upon transfer of memory ownership
Summary
In the Linux kernel, the following vulnerability has been resolved: media: vidtv: initialize local pointers upon transfer of memory ownership vidtv_channel_si_init() creates a temporary list (program, service, event) and ownership of the memory itself is transferred to the PAT/SDT/EIT tables through vidtv_psi_pat_program_assign(), vidtv_psi_sdt_service_assign(), vidtv_psi_eit_event_assign(). The problem here is that the local pointer where the memory ownership transfer was completed is not initialized to NULL. This causes the vidtv_psi_pmt_create_sec_for_each_pat_entry() function to fail, and in the flow that jumps to free_eit, the memory that was freed by vidtv_psi_*_table_destroy() can be accessed again by vidtv_psi_*_event_destroy() due to the uninitialized local pointer, so it is freed once again. Therefore, to prevent use-after-free and double-free vulnerability, local pointers must be initialized to NULL when transferring memory ownership.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3be8037960bccd13052cfdeba8805ad785041d70 , < 3caa18d35f1dabe85a3dd31bc387f391ac9f9b4e (git)
Affected: 3be8037960bccd13052cfdeba8805ad785041d70 , < fb9bd6d8d314b748e946ed6555eb4a956ee8c4d8 (git)
Affected: 3be8037960bccd13052cfdeba8805ad785041d70 , < a69c7fd603bf5ad93177394fbd9711922ee81032 (git)
Affected: 3be8037960bccd13052cfdeba8805ad785041d70 , < 30f4d4e5224a9e44e9ceb3956489462319d804ce (git)
Affected: 3be8037960bccd13052cfdeba8805ad785041d70 , < 98aabfe2d79f74613abc2b0b1cef08f97eaf5322 (git)
Create a notification for this product.
    Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/test-drivers/vidtv/vidtv_channel.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3caa18d35f1dabe85a3dd31bc387f391ac9f9b4e",
              "status": "affected",
              "version": "3be8037960bccd13052cfdeba8805ad785041d70",
              "versionType": "git"
            },
            {
              "lessThan": "fb9bd6d8d314b748e946ed6555eb4a956ee8c4d8",
              "status": "affected",
              "version": "3be8037960bccd13052cfdeba8805ad785041d70",
              "versionType": "git"
            },
            {
              "lessThan": "a69c7fd603bf5ad93177394fbd9711922ee81032",
              "status": "affected",
              "version": "3be8037960bccd13052cfdeba8805ad785041d70",
              "versionType": "git"
            },
            {
              "lessThan": "30f4d4e5224a9e44e9ceb3956489462319d804ce",
              "status": "affected",
              "version": "3be8037960bccd13052cfdeba8805ad785041d70",
              "versionType": "git"
            },
            {
              "lessThan": "98aabfe2d79f74613abc2b0b1cef08f97eaf5322",
              "status": "affected",
              "version": "3be8037960bccd13052cfdeba8805ad785041d70",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/test-drivers/vidtv/vidtv_channel.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.160",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.3",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19-rc1",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: initialize local pointers upon transfer of memory ownership\n\nvidtv_channel_si_init() creates a temporary list (program, service, event)\nand ownership of the memory itself is transferred to the PAT/SDT/EIT\ntables through vidtv_psi_pat_program_assign(),\nvidtv_psi_sdt_service_assign(), vidtv_psi_eit_event_assign().\n\nThe problem here is that the local pointer where the memory ownership\ntransfer was completed is not initialized to NULL. This causes the\nvidtv_psi_pmt_create_sec_for_each_pat_entry() function to fail, and\nin the flow that jumps to free_eit, the memory that was freed by\nvidtv_psi_*_table_destroy() can be accessed again by\nvidtv_psi_*_event_destroy() due to the uninitialized local pointer, so it\nis freed once again.\n\nTherefore, to prevent use-after-free and double-free vulnerability,\nlocal pointers must be initialized to NULL when transferring memory\nownership."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-13T15:29:15.164Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3caa18d35f1dabe85a3dd31bc387f391ac9f9b4e"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb9bd6d8d314b748e946ed6555eb4a956ee8c4d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/a69c7fd603bf5ad93177394fbd9711922ee81032"
        },
        {
          "url": "https://git.kernel.org/stable/c/30f4d4e5224a9e44e9ceb3956489462319d804ce"
        },
        {
          "url": "https://git.kernel.org/stable/c/98aabfe2d79f74613abc2b0b1cef08f97eaf5322"
        }
      ],
      "title": "media: vidtv: initialize local pointers upon transfer of memory ownership",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68808",
    "datePublished": "2026-01-13T15:29:15.164Z",
    "dateReserved": "2025-12-24T10:30:51.045Z",
    "dateUpdated": "2026-01-13T15:29:15.164Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-68808\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-01-13T16:16:02.967\",\"lastModified\":\"2026-01-13T16:16:02.967\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: vidtv: initialize local pointers upon transfer of memory ownership\\n\\nvidtv_channel_si_init() creates a temporary list (program, service, event)\\nand ownership of the memory itself is transferred to the PAT/SDT/EIT\\ntables through vidtv_psi_pat_program_assign(),\\nvidtv_psi_sdt_service_assign(), vidtv_psi_eit_event_assign().\\n\\nThe problem here is that the local pointer where the memory ownership\\ntransfer was completed is not initialized to NULL. This causes the\\nvidtv_psi_pmt_create_sec_for_each_pat_entry() function to fail, and\\nin the flow that jumps to free_eit, the memory that was freed by\\nvidtv_psi_*_table_destroy() can be accessed again by\\nvidtv_psi_*_event_destroy() due to the uninitialized local pointer, so it\\nis freed once again.\\n\\nTherefore, to prevent use-after-free and double-free vulnerability,\\nlocal pointers must be initialized to NULL when transferring memory\\nownership.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/30f4d4e5224a9e44e9ceb3956489462319d804ce\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3caa18d35f1dabe85a3dd31bc387f391ac9f9b4e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/98aabfe2d79f74613abc2b0b1cef08f97eaf5322\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a69c7fd603bf5ad93177394fbd9711922ee81032\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fb9bd6d8d314b748e946ed6555eb4a956ee8c4d8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.