CVE-2026-99068 (GCVE-0-2026-99068)

Vulnerability from cvelistv5 – Published: 2026-10-23 12:23 – Updated: 2026-10-23 12:23
VLAI
Title
ALSA: ctxfi: Fix memory leakage when clearing DAO input mappers
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: ctxfi: Fix memory leakage when clearing DAO input mappers Commit e576e7843c0d ("ALSA: ctxfi: Simplify dao_clear_{left,right}_input() functions") centralized the DAO input mapper clearing logic in dao_clear_input(), but omitted the kfree() calls. It removes the mapper entries from the list and sets their pointers to NULL without freeing the allocated array. This leaks memory each time dao_clear_input() is called. Store the base pointer of the allocation before clearing the mapper entries and free the array after removing entries from the list.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7067 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e576e7843c0d65b82d4092e5b386d9fbf5bc10c3 , < f7dc71c1ce885f5d9f128037ebc75d9c0356e060 (git)
Affected: e576e7843c0d65b82d4092e5b386d9fbf5bc10c3 , < 0919d8dd19f92e12829055c75fced9a454d644bf (git)
Affected: e576e7843c0d65b82d4092e5b386d9fbf5bc10c3 , < 593d46fc6af9a0178a46e77d6d24b20d2314165f (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.18.57 , ≤ 6.18.* (semver)
Unaffected: 7.2.11 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/pci/ctxfi/ctdaio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f7dc71c1ce885f5d9f128037ebc75d9c0356e060",
              "status": "affected",
              "version": "e576e7843c0d65b82d4092e5b386d9fbf5bc10c3",
              "versionType": "git"
            },
            {
              "lessThan": "0919d8dd19f92e12829055c75fced9a454d644bf",
              "status": "affected",
              "version": "e576e7843c0d65b82d4092e5b386d9fbf5bc10c3",
              "versionType": "git"
            },
            {
              "lessThan": "593d46fc6af9a0178a46e77d6d24b20d2314165f",
              "status": "affected",
              "version": "e576e7843c0d65b82d4092e5b386d9fbf5bc10c3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/pci/ctxfi/ctdaio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.57",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.11",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ctxfi: Fix memory leakage when clearing DAO input mappers\n\nCommit e576e7843c0d (\"ALSA: ctxfi: Simplify dao_clear_{left,right}_input() functions\")\ncentralized the DAO input mapper clearing logic in\ndao_clear_input(), but omitted the kfree() calls.\n\nIt removes the mapper entries from the list and sets their pointers\nto NULL without freeing the allocated array. This leaks memory each\ntime dao_clear_input() is called.\n\nStore the base pointer of the allocation before clearing the mapper\nentries and free the array after removing entries from the list."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-23T12:23:11.461Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f7dc71c1ce885f5d9f128037ebc75d9c0356e060"
        },
        {
          "url": "https://git.kernel.org/stable/c/0919d8dd19f92e12829055c75fced9a454d644bf"
        },
        {
          "url": "https://git.kernel.org/stable/c/593d46fc6af9a0178a46e77d6d24b20d2314165f"
        }
      ],
      "title": "ALSA: ctxfi: Fix memory leakage when clearing DAO input mappers",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99068",
    "datePublished": "2026-10-23T12:23:11.461Z",
    "dateReserved": "2026-09-25T10:25:14.389Z",
    "dateUpdated": "2026-10-23T12:23:11.461Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-99068",
      "date": "2026-10-26",
      "epss": "0.00166",
      "percentile": "0.05843"
    },
    "microsoft_vex": {
      "current_release_date": "2026-10-25T01:06:16.000Z",
      "cve": "CVE-2026-99068",
      "id": "msrc_CVE-2026-99068",
      "initial_release_date": "2026-10-25T01:06:16.000Z",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ALSA: ctxfi: Fix memory leakage when clearing DAO input mappers",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-99068.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "sound/pci/ctxfi/ctdaio.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "f7dc71c1ce885f5d9f128037ebc75d9c0356e060",
                    "status": "affected",
                    "version": "e576e7843c0d65b82d4092e5b386d9fbf5bc10c3",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0919d8dd19f92e12829055c75fced9a454d644bf",
                    "status": "affected",
                    "version": "e576e7843c0d65b82d4092e5b386d9fbf5bc10c3",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "593d46fc6af9a0178a46e77d6d24b20d2314165f",
                    "status": "affected",
                    "version": "e576e7843c0d65b82d4092e5b386d9fbf5bc10c3",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "sound/pci/ctxfi/ctdaio.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.14"
                  },
                  {
                    "lessThan": "6.14",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.57",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.11",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3",
                    "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\nALSA: ctxfi: Fix memory leakage when clearing DAO input mappers\n\nCommit e576e7843c0d (\"ALSA: ctxfi: Simplify dao_clear_{left,right}_input() functions\")\ncentralized the DAO input mapper clearing logic in\ndao_clear_input(), but omitted the kfree() calls.\n\nIt removes the mapper entries from the list and sets their pointers\nto NULL without freeing the allocated array. This leaks memory each\ntime dao_clear_input() is called.\n\nStore the base pointer of the allocation before clearing the mapper\nentries and free the array after removing entries from the list."
          }
        ],
        "id": "CVE-2026-99068",
        "lastModified": "2026-10-23T13:17:30.693",
        "metrics": {},
        "published": "2026-10-23T13:17:30.693",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0919d8dd19f92e12829055c75fced9a454d644bf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/593d46fc6af9a0178a46e77d6d24b20d2314165f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f7dc71c1ce885f5d9f128037ebc75d9c0356e060"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-26T14:36:56+00:00",
      "cve": "CVE-2026-99068",
      "id": "CVE-2026-99068",
      "initial_release_date": "2026-10-23T00:00:00+00:00",
      "product_status:known_affected": "199",
      "product_status:known_not_affected": "79",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ALSA: ctxfi: Fix memory leakage when clearing DAO input mappers",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-99068.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.