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CVE-2024-27073 (GCVE-0-2024-27073)

Vulnerability from cvelistv5 – Published: 2024-05-01 13:04 – Updated: 2026-08-05 11:29
VLAI
Title
media: ttpci: fix two memleaks in budget_av_attach
Summary
In the Linux kernel, the following vulnerability has been resolved: media: ttpci: fix two memleaks in budget_av_attach When saa7146_register_device and saa7146_vv_init fails, budget_av_attach should free the resources it allocates, like the error-handling of ttpci_budget_init does. Besides, there are two fixme comment refers to such deallocations.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-06 18:09 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < af37aed04997e644f7e1b52b696b62dcae3cc016 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 910363473e4bf97da3c350e08d915546dd6cc30b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 24e51d6eb578b82ff292927f14b9f5ec05a46beb (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 55ca0c7eae8499bb96f4e5d9b26af95e89c4e6a0 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7393c681f9aa05ffe2385e8716989565eed2fe06 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1597cd1a88cfcdc4bf8b1b44cd458fed9a5a5d63 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 656b8cc123d7635dd399d9f02594f27aa797ac3c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d0b07f712bf61e1a3cf23c87c663791c42e50837 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.4.273 , ≤ 5.4.* (semver)
Unaffected: 5.10.214 , ≤ 5.10.* (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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                {
                  "lessThan": "55ca0c7eae8499bb96f4e5d9b26af95e89c4e6a0",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "7393c681f9aa05ffe2385e8716989565eed2fe06",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "1597cd1a88cfcdc4bf8b1b44cd458fed9a5a5d63",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "656b8cc123d7635dd399d9f02594f27aa797ac3c",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "d0b07f712bf61e1a3cf23c87c663791c42e50837",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/media/pci/ttpci/budget-av.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.6.12"
                },
                {
                  "lessThan": "2.6.12",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.273",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.214",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.153",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.83",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.23",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.7.*",
                  "status": "unaffected",
                  "version": "6.7.11",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.8.*",
                  "status": "unaffected",
                  "version": "6.8.2",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.9",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.273",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.214",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.153",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.83",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.23",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.7.11",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.8.2",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.9",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: ttpci: fix two memleaks in budget_av_attach\n\nWhen saa7146_register_device and saa7146_vv_init fails, budget_av_attach\nshould free the resources it allocates, like the error-handling of\nttpci_budget_init does. Besides, there are two fixme comment refers to\nsuch deallocations."
            }
          ],
          "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 a PCI probe-time attach callback, and the resulting dangling state is exercised through local device files (/dev/dvb/adapterN/demux0, dvr0, dvbnet); there is no remote or adjacent-network path into budget_av_attach.\nAC:L - Once the failure branch has been taken, the attacker deterministically drives the use-after-free by opening the still-registered dvr0/demux0 node and starting a feed, with no race to win and unlimited retries.\nPR:L - Reaching the stale DVB character devices requires only an unprivileged local account with access to /dev/dvb, which is the norm for the video group on desktops and for the media/DVB application account on the set-top-box and embedded systems that carry these ttpci cards.\nUI:N - No victim action is needed; the leaked and dangling registrations are created automatically during driver probe and remain live until reboot.\nS:U - The freed saa7146_dev object, the leaked budget_av allocation and the orphaned DVB/i2c registrations all live inside the kernel\u0027s own security authority, crossing no VM, IOMMU or sandbox boundary.\nC:H - budget-\u003edev is left pointing at kmem_cache memory freed by saa7146_init_one\u0027s error path, so subsequent demux/dvr operations read attacker-groomable freed slab contents (including the dev-\u003emem MMIO pointer), a use-after-free that can be leveraged for kernel information disclosure.\nI:H - start_ts_capture() performs saa7146_write() through the freed device\u0027s dev-\u003emem pointer, so an attacker who reclaims that slab controls the destination of kernel writel() operations, yielding a write primitive suitable for control-flow hijacking.\nA:H - Beyond the unbounded leak of the budget_av allocation, the DMA page table and the pinned module reference, any access to the orphaned demux/dvr/dvbnet nodes dereferences freed memory and performs MMIO through an iounmap\u0027d mapping, reliably oopsing or panicking the kernel."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:29:22.792Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/af37aed04997e644f7e1b52b696b62dcae3cc016"
            },
            {
              "url": "https://git.kernel.org/stable/c/910363473e4bf97da3c350e08d915546dd6cc30b"
            },
            {
              "url": "https://git.kernel.org/stable/c/24e51d6eb578b82ff292927f14b9f5ec05a46beb"
            },
            {
              "url": "https://git.kernel.org/stable/c/55ca0c7eae8499bb96f4e5d9b26af95e89c4e6a0"
            },
            {
              "url": "https://git.kernel.org/stable/c/7393c681f9aa05ffe2385e8716989565eed2fe06"
            },
            {
              "url": "https://git.kernel.org/stable/c/1597cd1a88cfcdc4bf8b1b44cd458fed9a5a5d63"
            },
            {
              "url": "https://git.kernel.org/stable/c/656b8cc123d7635dd399d9f02594f27aa797ac3c"
            },
            {
              "url": "https://git.kernel.org/stable/c/d0b07f712bf61e1a3cf23c87c663791c42e50837"
            }
          ],
          "title": "media: ttpci: fix two memleaks in budget_av_attach",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-27073",
        "datePublished": "2024-05-01T13:04:37.653Z",
        "dateReserved": "2024-02-19T14:20:24.216Z",
        "dateUpdated": "2026-08-05T11:29:22.792Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.