Vulnerability-Lookup

FKIE_CVE-2026-31475

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-04-23 16:17

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: ASoC: sma1307: fix double free of devm_kzalloc() memory A previous change added NULL checks and cleanup for allocation failures in sma1307_setting_loaded(). However, the cleanup for mode_set entries is wrong. Those entries are allocated with devm_kzalloc(), so they are device-managed resources and must not be freed with kfree(). Manually freeing them in the error path can lead to a double free when devres later releases the same memory. Drop the manual kfree() loop and let devres handle the cleanup.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1a82c3272626db9006f4c2cad3adf2916417aed6
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d472d1a52985211b92883bb64bbe710b45980190
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fe757092d2329c397ecb32f2bf68a5b1c4bd9193

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: sma1307: fix double free of devm_kzalloc() memory\n\nA previous change added NULL checks and cleanup for allocation\nfailures in sma1307_setting_loaded().\n\nHowever, the cleanup for mode_set entries is wrong. Those entries are\nallocated with devm_kzalloc(), so they are device-managed resources and\nmust not be freed with kfree(). Manually freeing them in the error path\ncan lead to a double free when devres later releases the same memory.\n\nDrop the manual kfree() loop and let devres handle the cleanup."
    }
  ],
  "id": "CVE-2026-31475",
  "lastModified": "2026-04-23T16:17:41.280",
  "metrics": {},
  "published": "2026-04-22T14:16:44.207",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1a82c3272626db9006f4c2cad3adf2916417aed6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d472d1a52985211b92883bb64bbe710b45980190"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fe757092d2329c397ecb32f2bf68a5b1c4bd9193"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2026-31475 (GCVE-0-2026-31475)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-04-22 13:54

Title

ASoC: sma1307: fix double free of devm_kzalloc() memory

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d472d1a52985211b9…
	https://git.kernel.org/stable/c/1a82c3272626db900…
	https://git.kernel.org/stable/c/fe757092d2329c397…

Impacted products

Vendor

Product

Version

Linux

Affected: 0ec6bd16705fe21d6429d6b8f7981eae2142bba8 , < d472d1a52985211b92883bb64bbe710b45980190 (git)
Affected: 0ec6bd16705fe21d6429d6b8f7981eae2142bba8 , < 1a82c3272626db9006f4c2cad3adf2916417aed6 (git)
Affected: 0ec6bd16705fe21d6429d6b8f7981eae2142bba8 , < fe757092d2329c397ecb32f2bf68a5b1c4bd9193 (git)
Affected: f8434b8ba437d3f6cbcd9ffe8405bd16ed28fc5c (git)

Linux

Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/codecs/sma1307.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d472d1a52985211b92883bb64bbe710b45980190",
              "status": "affected",
              "version": "0ec6bd16705fe21d6429d6b8f7981eae2142bba8",
              "versionType": "git"
            },
            {
              "lessThan": "1a82c3272626db9006f4c2cad3adf2916417aed6",
              "status": "affected",
              "version": "0ec6bd16705fe21d6429d6b8f7981eae2142bba8",
              "versionType": "git"
            },
            {
              "lessThan": "fe757092d2329c397ecb32f2bf68a5b1c4bd9193",
              "status": "affected",
              "version": "0ec6bd16705fe21d6429d6b8f7981eae2142bba8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f8434b8ba437d3f6cbcd9ffe8405bd16ed28fc5c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/codecs/sma1307.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.21",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.11",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.14.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: sma1307: fix double free of devm_kzalloc() memory\n\nA previous change added NULL checks and cleanup for allocation\nfailures in sma1307_setting_loaded().\n\nHowever, the cleanup for mode_set entries is wrong. Those entries are\nallocated with devm_kzalloc(), so they are device-managed resources and\nmust not be freed with kfree(). Manually freeing them in the error path\ncan lead to a double free when devres later releases the same memory.\n\nDrop the manual kfree() loop and let devres handle the cleanup."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-22T13:54:04.113Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d472d1a52985211b92883bb64bbe710b45980190"
        },
        {
          "url": "https://git.kernel.org/stable/c/1a82c3272626db9006f4c2cad3adf2916417aed6"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe757092d2329c397ecb32f2bf68a5b1c4bd9193"
        }
      ],
      "title": "ASoC: sma1307: fix double free of devm_kzalloc() memory",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31475",
    "datePublished": "2026-04-22T13:54:04.113Z",
    "dateReserved": "2026-03-09T15:48:24.098Z",
    "dateUpdated": "2026-04-22T13:54:04.113Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

FKIE_CVE-2026-31475

CVE-2026-31475 (GCVE-0-2026-31475)

Tags

Sightings

Nomenclature