Vulnerability-Lookup

FKIE_CVE-2026-74333

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:19

Severity

8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: ASoC: amd: acp-sdw-legacy: Bound DAI link iteration create_sdw_dailinks() walks soc_dais until it finds an entry with initialised cleared, but soc_dais is allocated with exactly num_ends entries. If all entries are initialised, the loop reads past the end of the array. This was reported by KASAN: BUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach] Read of size 1 Pass the allocated entry count to create_sdw_dailinks() and stop before reading past the array.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0230471eef5902207516851dcd47c559571dded2
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1279bdab5fa1f28c168e54215db506e87c6fac1e
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d49ecdf327cc91062d2f80996a163cf65fda1e60

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/amd/acp/acp-sdw-legacy-mach.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1279bdab5fa1f28c168e54215db506e87c6fac1e",
              "status": "affected",
              "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e",
              "versionType": "git"
            },
            {
              "lessThan": "0230471eef5902207516851dcd47c559571dded2",
              "status": "affected",
              "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e",
              "versionType": "git"
            },
            {
              "lessThan": "d49ecdf327cc91062d2f80996a163cf65fda1e60",
              "status": "affected",
              "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/amd/acp/acp-sdw-legacy-mach.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "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\nASoC: amd: acp-sdw-legacy: Bound DAI link iteration\n\ncreate_sdw_dailinks() walks soc_dais until it finds an entry with\ninitialised cleared, but soc_dais is allocated with exactly num_ends\nentries. If all entries are initialised, the loop reads past the end of\nthe array.\n\nThis was reported by KASAN:\n\n  BUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach]\n  Read of size 1\n\nPass the allocated entry count to create_sdw_dailinks() and stop before\nreading past the array."
    }
  ],
  "id": "CVE-2026-74333",
  "lastModified": "2026-08-17T06:19:27.787",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-15T06:22:34.167",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0230471eef5902207516851dcd47c559571dded2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1279bdab5fa1f28c168e54215db506e87c6fac1e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d49ecdf327cc91062d2f80996a163cf65fda1e60"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-74333 (GCVE-0-2026-74333)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:46

Title

ASoC: amd: acp-sdw-legacy: Bound DAI link iteration

Summary

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 Scorecard

References

3 references

URL	Tags
https://git.kernel.org/stable/c/1279bdab5fa1f28c1…
https://git.kernel.org/stable/c/0230471eef5902207…
https://git.kernel.org/stable/c/d49ecdf327cc91062…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2981d9b0789c44b7375e7d599caf71bd843afc9e , < 1279bdab5fa1f28c168e54215db506e87c6fac1e (git) Affected: 2981d9b0789c44b7375e7d599caf71bd843afc9e , < 0230471eef5902207516851dcd47c559571dded2 (git) Affected: 2981d9b0789c44b7375e7d599caf71bd843afc9e , < d49ecdf327cc91062d2f80996a163cf65fda1e60 (git)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/amd/acp/acp-sdw-legacy-mach.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1279bdab5fa1f28c168e54215db506e87c6fac1e",
              "status": "affected",
              "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e",
              "versionType": "git"
            },
            {
              "lessThan": "0230471eef5902207516851dcd47c559571dded2",
              "status": "affected",
              "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e",
              "versionType": "git"
            },
            {
              "lessThan": "d49ecdf327cc91062d2f80996a163cf65fda1e60",
              "status": "affected",
              "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "sound/soc/amd/acp/acp-sdw-legacy-mach.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: amd: acp-sdw-legacy: Bound DAI link iteration\n\ncreate_sdw_dailinks() walks soc_dais until it finds an entry with\ninitialised cleared, but soc_dais is allocated with exactly num_ends\nentries. If all entries are initialised, the loop reads past the end of\nthe array.\n\nThis was reported by KASAN:\n\n  BUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach]\n  Read of size 1\n\nPass the allocated entry count to create_sdw_dailinks() and stop before\nreading past the array."
        }
      ],
      "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 flaw is only reachable during local AMD ACP PCI/platform driver probe (snd_acp63_probe -\u003e acp63_machine_register -\u003e mc_probe); there is no network, Bluetooth, or userspace syscall/ioctl path to create_sdw_dailinks().\nAC:L - On affected AMD SoundWire legacy laptops, when every soc_dais slot is marked initialised the OOB read is deterministic at each boot/probe; KASAN already hit this in mc_probe on real hardware, so no attacker-controlled race or rare timing is required.\nPR:N - Exploitation needs no credentials: mc_probe runs automatically during pre-login kernel initialization when ACPI/PCI matches an amd_sdw machine table on built-in SoundWire hardware, before any authenticated user session exists.\nUI:N - No victim interaction is required beyond normal system boot on vulnerable AMD SoundWire hardware; the bug triggers during driver initialization, not from opening audio devices or mounting filesystems.\nS:U - Impact is confined to kernel heap corruption and crash/privilege escalation within the host kernel; this is not a VM escape, IOMMU bypass, or cross-security-authority boundary.\nC:H - The bug is a slab out-of-bounds read (KASAN: read of size 1) past the soc_dais array, which can disclose adjacent kernel heap objects and satisfies the guidance to rate out-of-bounds reads as High.\nI:H - After the OOB initialised check, the loop can treat adjacent slab memory as a valid asoc_sdw_dailink and call create_sdw_dailink(), corrupting list heads and allocation sizes and enabling further heap corruption or control-flow hijack.\nA:H - KASAN reported slab-out-of-bounds in mc_probe during audio card registration; continued iteration over corrupt structures can kernel oops/panic at boot, denying availability to all users on the machine."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:46:00.787Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1279bdab5fa1f28c168e54215db506e87c6fac1e"
        },
        {
          "url": "https://git.kernel.org/stable/c/0230471eef5902207516851dcd47c559571dded2"
        },
        {
          "url": "https://git.kernel.org/stable/c/d49ecdf327cc91062d2f80996a163cf65fda1e60"
        }
      ],
      "title": "ASoC: amd: acp-sdw-legacy: Bound DAI link iteration",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74333",
    "datePublished": "2026-08-15T05:58:25.781Z",
    "dateReserved": "2026-08-15T05:44:03.885Z",
    "dateUpdated": "2026-08-17T05:46:00.787Z",
    "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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

FKIE_CVE-2026-74333

CVE-2026-74333 (GCVE-0-2026-74333)

Tags

Sightings

Nomenclature

Related by attack behaviour