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CVE-2026-89980 (GCVE-0-2026-89980)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:32 – Updated: 2026-09-16 14:40
VLAI
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
References
Impacted products
Vendor Product Version CPE status
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)
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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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Show details on NVD website
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{
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/parisc/harmony.c"
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              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
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              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "2.6.12",
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          "lang": "en",
          "value": "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."
        }
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      "metrics": [
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            "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": [
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              "lang": "en",
              "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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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T14:40:59.448Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/33abb7491e89285a41565670945293dda841afc4"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89980",
    "datePublished": "2026-09-16T10:32:57.355Z",
    "dateReserved": "2026-09-11T19:38:34.779Z",
    "dateUpdated": "2026-09-16T14:40:59.448Z",
    "state": "PUBLISHED"
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  }
}



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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.

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  • 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.


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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.