CVE-2026-89980 (GCVE-0-2026-89980)
Vulnerability from cvelistv5 – Published: 2026-09-16 10:32 – Updated: 2026-10-30 12:33
VLAI
EPSS
VEX
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)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 00fee94390e90c2e4db0a502bd1e2ea7f0b795b9
(git)
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) |
guessed | |
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.273 , ≤ 5.10.* (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 , ≤ * (original_commit_for_fix) |
guessed |
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"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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"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"
},
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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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"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."
}
],
"id": "CVE-2026-89980",
"lastModified": "2026-10-30T13:20:37.687",
"metrics": {
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"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"
},
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
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},
"published": "2026-09-16T11:17:08.913",
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],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-11-07T11:27:06+00:00",
"cve": "CVE-2026-89980",
"id": "CVE-2026-89980",
"initial_release_date": "2026-09-16T00:00:00+00:00",
"product_status:known_not_affected": "203",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ALSA: harmony: initialize locks before requesting IRQ",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89980.json",
"version": "3"
}
}
}
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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.
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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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.