Vulnerability-Lookup

GHSA-R596-MVWG-48GR

Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 15:31

Details

In the Linux kernel, the following vulnerability has been resolved:

ASoC: loongson: Fix error handling in ACPI property parsing

In loongson_card_parse_acpi(), the return value of device_property_read_string() for the codec-dai-name property was ignored. If the property is missing or invalid, an uninitialized pointer would be used later, potentially leading to undefined behavior.

Fix this by checking the return value and propagating the error appropriately.

Severity

8.4 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89943"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:17:03Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: loongson: Fix error handling in ACPI property parsing\n\nIn loongson_card_parse_acpi(), the return value of\ndevice_property_read_string() for the `codec-dai-name` property was\nignored. If the property is missing or invalid, an uninitialized pointer\nwould be used later, potentially leading to undefined behavior.\n\nFix this by checking the return value and propagating the error\nappropriately.",
  "id": "GHSA-r596-mvwg-48gr",
  "modified": "2026-09-16T15:31:02Z",
  "published": "2026-09-16T12:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89943"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0eb0e3c623ac1da8b85d518043fef7660af7805d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e580d84a638f007b5b68d50d7633de502f325e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/682c123cef455545f48ecbe74b3872fa303bf58f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb1602908c67db7197ab001638573262bccc6ca2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-89943 (GCVE-0-2026-89943)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:32 – Updated: 2026-09-16 14:40

Title

ASoC: loongson: Fix error handling in ACPI property parsing

Summary

In the Linux kernel, the following vulnerability has been resolved: ASoC: loongson: Fix error handling in ACPI property parsing In loongson_card_parse_acpi(), the return value of device_property_read_string() for the `codec-dai-name` property was ignored. If the property is missing or invalid, an uninitialized pointer would be used later, potentially leading to undefined behavior. Fix this by checking the return value and propagating the error appropriately.

Severity

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/682c123cef455545f…
https://git.kernel.org/stable/c/4e580d84a638f007b…
https://git.kernel.org/stable/c/bb1602908c67db719…
https://git.kernel.org/stable/c/0eb0e3c623ac1da8b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ddb538a3004b10a04a14a0d275c5f52a8d161e80 , < 682c123cef455545f48ecbe74b3872fa303bf58f (git) Affected: ddb538a3004b10a04a14a0d275c5f52a8d161e80 , < 4e580d84a638f007b5b68d50d7633de502f325e7 (git) Affected: ddb538a3004b10a04a14a0d275c5f52a8d161e80 , < bb1602908c67db7197ab001638573262bccc6ca2 (git) Affected: ddb538a3004b10a04a14a0d275c5f52a8d161e80 , < 0eb0e3c623ac1da8b85d518043fef7660af7805d (git)
Linux	Linux	Affected: 6.12 Unaffected: 0 , < 6.12 (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/loongson/loongson_card.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "682c123cef455545f48ecbe74b3872fa303bf58f",
              "status": "affected",
              "version": "ddb538a3004b10a04a14a0d275c5f52a8d161e80",
              "versionType": "git"
            },
            {
              "lessThan": "4e580d84a638f007b5b68d50d7633de502f325e7",
              "status": "affected",
              "version": "ddb538a3004b10a04a14a0d275c5f52a8d161e80",
              "versionType": "git"
            },
            {
              "lessThan": "bb1602908c67db7197ab001638573262bccc6ca2",
              "status": "affected",
              "version": "ddb538a3004b10a04a14a0d275c5f52a8d161e80",
              "versionType": "git"
            },
            {
              "lessThan": "0eb0e3c623ac1da8b85d518043fef7660af7805d",
              "status": "affected",
              "version": "ddb538a3004b10a04a14a0d275c5f52a8d161e80",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/loongson/loongson_card.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: loongson: Fix error handling in ACPI property parsing\n\nIn loongson_card_parse_acpi(), the return value of\ndevice_property_read_string() for the `codec-dai-name` property was\nignored. If the property is missing or invalid, an uninitialized pointer\nwould be used later, potentially leading to undefined behavior.\n\nFix this by checking the return value and propagating the error\nappropriately."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is in loongson_card_parse_acpi(), reached only from the Loongson ASoC platform probe (loongson_asoc_card_probe) when an ACPI-companion sound-card device is enumerated. There is no network, Bluetooth, or USB packet path into this ACPI property parser.\nAC:L - If the codec-dai-name ACPI property is missing or not a string, device_property_read_string() fails without writing codec_dai_name; the ignored return then deterministically stores that uninitialized pointer into the static DAI link. No race or attacker-uncontrollable layout is required.\nPR:N - loongson_asoc_card_probe() runs automatically from ACPI/platform enumeration (PRP0001 compatible loongson,ls-audio-card) on Loongson laptops, embedded boards, and LoongArch VMs; no OS account, capability, or user-namespace privilege is checked on this probe path.\nUI:N - Probe and deferred-probe retries run unattended at boot when the matching ACPI audio-card device is present; no victim must open ALSA nodes, load a module by hand, or plug in extra hardware.\nS:U - The uninitialized DAI-name pointer is consumed inside the host ASoC core (DAI matching and logging) on the same kernel security authority; this is not a VM escape, IOMMU bypass, or sandbox breakout.\nC:H - The garbage pointer is stored as codecs-\u003edai_name and later passed to strcmp() in snd_soc_is_matching_dai() and to %s in the CODEC DAI not-registered log, producing an unbounded kernel-memory read rather than a small bounded leak.\nI:H - The same uninitialized stack pointer is written into static loongson_dai_links[] used for DAI matching; a wild-pointer match binds the wrong codec DAI (type confusion) and later ASoC bring-up operates through that component, an exploitable integrity primitive consistent with uninitialized-pointer scoring.\nA:H - strcmp() or printk %s on the uninitialized pointer oopses or panics the kernel during sound-card probe on affected Loongson ACPI systems, fully denying availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T14:40:31.281Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/682c123cef455545f48ecbe74b3872fa303bf58f"
        },
        {
          "url": "https://git.kernel.org/stable/c/4e580d84a638f007b5b68d50d7633de502f325e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb1602908c67db7197ab001638573262bccc6ca2"
        },
        {
          "url": "https://git.kernel.org/stable/c/0eb0e3c623ac1da8b85d518043fef7660af7805d"
        }
      ],
      "title": "ASoC: loongson: Fix error handling in ACPI property parsing",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89943",
    "datePublished": "2026-09-16T10:32:30.527Z",
    "dateReserved": "2026-09-11T19:38:34.777Z",
    "dateUpdated": "2026-09-16T14:40:31.281Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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