CVE-2026-64602 (GCVE-0-2026-64602)
Vulnerability from cvelistv5 – Published: 2026-08-06 07:13 – Updated: 2026-08-17 04:58
VLAI
EPSS
VEX
Title
iio: adc: spear: Initialize completion before requesting IRQ
Summary
In the Linux kernel, the following vulnerability has been resolved:
iio: adc: spear: Initialize completion before requesting IRQ
In the report from Jaeyoung Chung:
"spear_adc_probe() in drivers/iio/adc/spear_adc.c registers its
interrupt handler with devm_request_irq() before it initializes
st->completion with init_completion(). If an interrupt arrives after
devm_request_irq() and before init_completion(), the handler calls
complete() on an uninitialized completion, causing a kernel panic.
The probe path, in spear_adc_probe():
iodev = devm_iio_device_alloc(&pdev->dev, sizeof(*st)); /* st kzalloc-zeroed */
...
retval = devm_request_irq(&pdev->dev, irq, spear_adc_isr, 0,
LPC32XXAD_NAME, st); /* register handler */
...
init_completion(&st->completion); /* initialize completion */
spear_adc_isr() calls complete():
complete(&st->completion);
If the device raises an interrupt before init_completion() runs,
complete() acquires the uninitialized wait.lock and walks the zeroed
task_list in swake_up_locked(). The zeroed task_list makes list_empty()
return false, so swake_up_locked() dereferences a NULL list entry,
triggering a KASAN wild-memory-access."
Fix the chance of a spurious IRQ causing an uninitialized pointer
dereference by moving init_completion() above devm_request_irq().
Severity
No CVSS data available.
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed , < aea8ae6c4d3ed58d9223360f758df6bd8b90c608
(git)
Affected: b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed , < 67a49ab41320b3f721ce4be7447754ff040acbd5 (git) Affected: b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed , < a50757398794aaa25f908b96c6733e045466cba4 (git) Affected: b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed , < f3f90bc7b38ba3ff14f131cea0f8eb77624787a8 (git) Affected: b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed , < 37077d8271b1f24894fbc21bca1c4cd337525d31 (git) Affected: b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed , < bbfebae473ac2c8a194523b29ccb9b45f02f134c (git) Affected: b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed , < eb5b07c9d0ec1a9d4b6871b14793c19967d79dc4 (git) Affected: b586e5d9eee038b8ee6f846cdb6cf2fcbcb2f4ed , < 3ee2128b6f0eb0be7b6cb8f6e0f1f113a65201a0 (git) |
|
| Linux | Linux |
Affected:
3.16
Unaffected: 0 , < 3.16 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
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}
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: spear: Initialize completion before requesting IRQ\n\nIn the report from Jaeyoung Chung:\n\n\"spear_adc_probe() in drivers/iio/adc/spear_adc.c registers its\ninterrupt handler with devm_request_irq() before it initializes\nst-\u003ecompletion with init_completion(). If an interrupt arrives after\ndevm_request_irq() and before init_completion(), the handler calls\ncomplete() on an uninitialized completion, causing a kernel panic.\n\nThe probe path, in spear_adc_probe():\n\n iodev = devm_iio_device_alloc(\u0026pdev-\u003edev, sizeof(*st)); /* st kzalloc-zeroed */\n ...\n retval = devm_request_irq(\u0026pdev-\u003edev, irq, spear_adc_isr, 0,\n LPC32XXAD_NAME, st); /* register handler */\n ...\n init_completion(\u0026st-\u003ecompletion); /* initialize completion */\n\nspear_adc_isr() calls complete():\n\n complete(\u0026st-\u003ecompletion);\n\nIf the device raises an interrupt before init_completion() runs,\ncomplete() acquires the uninitialized wait.lock and walks the zeroed\ntask_list in swake_up_locked(). The zeroed task_list makes list_empty()\nreturn false, so swake_up_locked() dereferences a NULL list entry,\ntriggering a KASAN wild-memory-access.\"\n\nFix the chance of a spurious IRQ causing an uninitialized pointer\ndereference by moving init_completion() above devm_request_irq()."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:58:25.306Z",
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{
"url": "https://git.kernel.org/stable/c/67a49ab41320b3f721ce4be7447754ff040acbd5"
},
{
"url": "https://git.kernel.org/stable/c/a50757398794aaa25f908b96c6733e045466cba4"
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"url": "https://git.kernel.org/stable/c/f3f90bc7b38ba3ff14f131cea0f8eb77624787a8"
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"url": "https://git.kernel.org/stable/c/eb5b07c9d0ec1a9d4b6871b14793c19967d79dc4"
},
{
"url": "https://git.kernel.org/stable/c/3ee2128b6f0eb0be7b6cb8f6e0f1f113a65201a0"
}
],
"title": "iio: adc: spear: Initialize completion before requesting IRQ",
"x_generator": {
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"cveId": "CVE-2026-64602",
"datePublished": "2026-08-06T07:13:54.519Z",
"dateReserved": "2026-07-19T15:36:31.799Z",
"dateUpdated": "2026-08-17T04:58:25.306Z",
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: spear: Initialize completion before requesting IRQ\n\nIn the report from Jaeyoung Chung:\n\n\"spear_adc_probe() in drivers/iio/adc/spear_adc.c registers its\ninterrupt handler with devm_request_irq() before it initializes\nst-\u003ecompletion with init_completion(). If an interrupt arrives after\ndevm_request_irq() and before init_completion(), the handler calls\ncomplete() on an uninitialized completion, causing a kernel panic.\n\nThe probe path, in spear_adc_probe():\n\n iodev = devm_iio_device_alloc(\u0026pdev-\u003edev, sizeof(*st)); /* st kzalloc-zeroed */\n ...\n retval = devm_request_irq(\u0026pdev-\u003edev, irq, spear_adc_isr, 0,\n LPC32XXAD_NAME, st); /* register handler */\n ...\n init_completion(\u0026st-\u003ecompletion); /* initialize completion */\n\nspear_adc_isr() calls complete():\n\n complete(\u0026st-\u003ecompletion);\n\nIf the device raises an interrupt before init_completion() runs,\ncomplete() acquires the uninitialized wait.lock and walks the zeroed\ntask_list in swake_up_locked(). The zeroed task_list makes list_empty()\nreturn false, so swake_up_locked() dereferences a NULL list entry,\ntriggering a KASAN wild-memory-access.\"\n\nFix the chance of a spurious IRQ causing an uninitialized pointer\ndereference by moving init_completion() above devm_request_irq()."
}
],
"id": "CVE-2026-64602",
"lastModified": "2026-08-17T05:18:06.907",
"metrics": {},
"published": "2026-08-06T08:16:35.920",
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}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-10-03T00:40:42Z",
"cve": "CVE-2026-64602",
"id": "CVE-2026-64602",
"initial_release_date": "2026-08-06T23:55:21Z",
"product_status:known_affected": "673",
"product_status:known_not_affected": "60",
"product_status:recommended": "256",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-64602",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64602.json",
"version": "13"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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.
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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.
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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