Vulnerability-Lookup

GHSA-W4V8-WQJ5-PMGX

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:

ALSA: harmony: initialize locks before requesting IRQ

snd_harmony_create() registers the IRQ before initializing h->lock and h->mixer_lock. A pending interrupt can invoke the handler while these locks are uninitialized.

Initialize both locks before requesting the IRQ so the handler always sees valid lock state.

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-2026-89980"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:17:08Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: harmony: initialize locks before requesting IRQ\n\nsnd_harmony_create() registers the IRQ before initializing h-\u003elock and\nh-\u003emixer_lock. A pending interrupt can invoke the handler while these\nlocks are uninitialized.\n\nInitialize both locks before requesting the IRQ so the handler always\nsees valid lock state.",
  "id": "GHSA-w4v8-wqj5-pmgx",
  "modified": "2026-09-16T15:31:04Z",
  "published": "2026-09-16T12:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89980"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33abb7491e89285a41565670945293dda841afc4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7dc239edb6d58e01c9ec868565cc03e7adf91747"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89992bda7dfbba7ded2ba4185730453c57fa65bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9347588bbd6ad43a85e17046d9c117a41453c52a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9af6c9203583655cb7ed45e52e14101652b37547"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd209eb3136e002becbda232e399fa31a2276436"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f86ff9238b0c8284909e073a681a60708b9f36ab"
    }
  ],
  "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-2026-89980 (GCVE-0-2026-89980)

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

Title

ALSA: harmony: initialize locks before requesting IRQ

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: harmony: initialize locks before requesting IRQ snd_harmony_create() registers the IRQ before initializing h->lock and h->mixer_lock. A pending interrupt can invoke the handler while these locks are uninitialized. Initialize both locks before requesting the IRQ so the handler always sees valid lock state.

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

7 references

URL	Tags
https://git.kernel.org/stable/c/9af6c9203583655cb…
https://git.kernel.org/stable/c/f86ff9238b0c82849…
https://git.kernel.org/stable/c/7dc239edb6d58e01c…
https://git.kernel.org/stable/c/9347588bbd6ad43a8…
https://git.kernel.org/stable/c/89992bda7dfbba7de…
https://git.kernel.org/stable/c/cd209eb3136e002be…
https://git.kernel.org/stable/c/33abb7491e89285a4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9af6c9203583655cb7ed45e52e14101652b37547 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f86ff9238b0c8284909e073a681a60708b9f36ab (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7dc239edb6d58e01c9ec868565cc03e7adf91747 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9347588bbd6ad43a85e17046d9c117a41453c52a (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 89992bda7dfbba7ded2ba4185730453c57fa65bc (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cd209eb3136e002becbda232e399fa31a2276436 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 33abb7491e89285a41565670945293dda841afc4 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (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-rc2 , ≤ * (original_commit_for_fix)

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              "value": "AV:L - The bug is reached only from snd_harmony_probe() \u2192 snd_harmony_create() \u2192 request_irq() \u2192 snd_harmony_interrupt() on onboard HP PA-RISC LASI/ASP Harmony audio, which enumerates at boot or module bind. There is no network, Bluetooth, or USB packet path into this GSC chip.\nAC:L - snd_harmony_create() calls request_irq() before spin_lock_init() and before pcm_init()\u0027s harmony_disable_interrupts(). Firmware leftover DSTATUS_IE plus pending PN/RN lets gsc_asic_unmask_irq() deliver snd_harmony_interrupt() immediately against uninitialized h-\u003elock, without an attacker-uncontrollable race.\nPR:N - snd_harmony_create() performs no capability or authentication checks before request_irq(). On GSC/LASI PA-RISC workstations and servers with Harmony, kernel/udev enumeration runs the vulnerable probe automatically without an OS account or user-namespace privilege.\nUI:N - No victim action is required. A pending Harmony interrupt during driver probe at boot or module autoload invokes the uninitialized-lock IRQ path without anyone opening ALSA PCM or control nodes.\nS:U - Impact is uninitialized spinlock use and DMA next-address programming inside the host kernel Harmony driver. This does not cross a VM, IOMMU, or sandbox security boundary.\nC:H - snd_harmony_interrupt() takes uninitialized h-\u003elock in hard-IRQ context and, with psubs/csubs still NULL, programs HARMONY_PNXTADD from zeroed sdma so the chip DMAs from physical address 0. That undefined lock/DMA behavior can disclose kernel memory rather than a small bounded leak.\nI:H - On SMP PA-RISC (defconfig), probe can spin_lock_init() h-\u003elock while the IRQ handler still holds the zeroed lock, and the handler writes HARMONY_RNXTADD/PNXTADD (including 0) in that window. That lock-state corruption and invalid DMA programming are write/control-flow primitives, not a pure crash.\nA:H - Taking uninitialized h-\u003elock in snd_harmony_interrupt() during probe hits DEBUG_SPINLOCK bad-magic BUG, lockdep non-static-key failure, oops/panic, or a hung IRQ/DMA path on affected PA-RISC machines, fully denying availability."
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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