CVE-2026-64041 (GCVE-0-2026-64041)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-08-05 12:38
VLAI
Title
ASoC: codecs: fs210x: fix possible buffer overflow
Summary
In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: fs210x: fix possible buffer overflow In fs210x_effect_scene_info(), a string was copied like this: strscpy(DST, SRC, strlen(SRC) + 1); A buffer overflow would happen if strlen(SRC) >= sizeof(DST). Actually, strscpy() must be used this way: strscpy(DST, SRC, sizeof(DST)); strscpy(DST, SRC); // defaults to sizeof(DST)
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 75611770177965ae902c87c96eace07542beff07 , < 1ddf678bb75b6383c775ece61d40956c441d8a26 (git)
Affected: 75611770177965ae902c87c96eace07542beff07 , < 6daefdf1cd3c56483f61970a76c0ad6028e4118f (git)
Affected: 75611770177965ae902c87c96eace07542beff07 , < 0d435a7ebcd4e97e47673c1ab6fb27f973a053ec (git)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/codecs/fs210x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "75611770177965ae902c87c96eace07542beff07",
              "versionType": "git"
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            }
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          "product": "Linux",
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          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
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              "version": "0",
              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "versionStartIncluding": "6.18",
                  "vulnerable": true
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                  "versionStartIncluding": "6.18",
                  "vulnerable": true
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                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.18",
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                }
              ],
              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codecs: fs210x: fix possible buffer overflow\n\nIn fs210x_effect_scene_info(), a string was copied like this:\n\n    strscpy(DST, SRC, strlen(SRC) + 1);\n\nA buffer overflow would happen if strlen(SRC) \u003e= sizeof(DST).\nActually, strscpy() must be used this way:\n\n    strscpy(DST, SRC, sizeof(DST));\n    strscpy(DST, SRC); // defaults to sizeof(DST)"
        }
      ],
      "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 overflow is triggered only through a local ALSA control ioctl on /dev/snd/controlC*, not via any network, Bluetooth, or physical bus interface.\nAC:L - Once firmware contains a scene name of 64+ bytes, a single SNDRV_CTL_IOCTL_ELEM_INFO call deterministically overflows the 64-byte enumerated name buffer on the kernel stack.\nPR:L - Exploitation requires local access to the ALSA control device, which is typically granted to unprivileged users in the audio group on embedded Linux, kiosk, and IoT deployments using this amplifier.\nUI:N - The attacker can trigger the vulnerable ioctl directly (e.g., via amixer or a custom program) without requiring any action from a victim user.\nS:U - Successful exploitation results in standard kernel memory corruption and potential local privilege escalation within the same security authority, not a cross-boundary escape such as VM or sandbox breakout.\nC:H - The stack buffer overflow writes beyond the 64-byte destination, corrupting adjacent kernel stack data and enabling information disclosure as part of memory corruption exploitation.\nI:H - Unbounded stack corruption from the incorrect strscpy size argument can overwrite return addresses and other stack metadata, enabling arbitrary kernel code execution.\nA:H - Stack corruption in kernel context during ioctl handling can cause kernel oops, panic, or hang, resulting in complete loss of system availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:38:33.905Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/1ddf678bb75b6383c775ece61d40956c441d8a26"
        },
        {
          "url": "https://git.kernel.org/stable/c/6daefdf1cd3c56483f61970a76c0ad6028e4118f"
        },
        {
          "url": "https://git.kernel.org/stable/c/0d435a7ebcd4e97e47673c1ab6fb27f973a053ec"
        }
      ],
      "title": "ASoC: codecs: fs210x: fix possible buffer overflow",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64041",
    "datePublished": "2026-07-19T15:39:27.967Z",
    "dateReserved": "2026-07-19T07:54:57.029Z",
    "dateUpdated": "2026-08-05T12:38:33.905Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64041",
      "date": "2026-09-21",
      "epss": "0.00175",
      "percentile": "0.07256"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "sound/soc/codecs/fs210x.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
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                    "versionType": "git"
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                    "version": "7.0.11",
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                    "versionType": "original_commit_for_fix"
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codecs: fs210x: fix possible buffer overflow\n\nIn fs210x_effect_scene_info(), a string was copied like this:\n\n    strscpy(DST, SRC, strlen(SRC) + 1);\n\nA buffer overflow would happen if strlen(SRC) \u003e= sizeof(DST).\nActually, strscpy() must be used this way:\n\n    strscpy(DST, SRC, sizeof(DST));\n    strscpy(DST, SRC); // defaults to sizeof(DST)"
          }
        ],
        "id": "CVE-2026-64041",
        "lastModified": "2026-07-30T14:59:47.950",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
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              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
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        "published": "2026-07-19T16:17:44.367",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0d435a7ebcd4e97e47673c1ab6fb27f973a053ec"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/1ddf678bb75b6383c775ece61d40956c441d8a26"
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          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6daefdf1cd3c56483f61970a76c0ad6028e4118f"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-20T16:46:56+00:00",
      "cve": "CVE-2026-64041",
      "id": "CVE-2026-64041",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ASoC: codecs: fs210x: fix possible buffer overflow",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64041.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-06T01:09:57Z",
      "cve": "CVE-2026-64041",
      "id": "CVE-2026-64041",
      "initial_release_date": "2026-07-21T13:00:51Z",
      "product_status:known_not_affected": "296",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64041",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64041.json",
      "version": "3"
    }
  }
}



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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.