CVE-2026-43426 (GCVE-0-2026-43426)
Vulnerability from cvelistv5 – Published: 2026-05-08 14:21 – Updated: 2026-05-11 22:24
VLAI
EPSS
VEX
Title
usb: renesas_usbhs: fix use-after-free in ISR during device removal
Summary
In the Linux kernel, the following vulnerability has been resolved:
usb: renesas_usbhs: fix use-after-free in ISR during device removal
In usbhs_remove(), the driver frees resources (including the pipe array)
while the interrupt handler (usbhs_interrupt) is still registered. If an
interrupt fires after usbhs_pipe_remove() but before the driver is fully
unbound, the ISR may access freed memory, causing a use-after-free.
Fix this by calling devm_free_irq() before freeing resources. This ensures
the interrupt handler is both disabled and synchronized (waits for any
running ISR to complete) before usbhs_pipe_remove() is called.
Severity
7.8 (High)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < c7012fc73dab4829404fedeeaa8531f12ac8545f
(git)
Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 51afaf919bbaacdd9cc9e146033ae0a743a42dd7 (git) Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 1899edac312ef17a7234851686e8a703f56d0a84 (git) Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 9c6159d5b72d5fc265cce5da04f27d730b552e69 (git) Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 6287e0c01ccb818e7214f88d885ffb7c9e81b0e0 (git) Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae (git) Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 6ffe44f022c95b1b29c691d2169c5abc046f7580 (git) Affected: f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 , < 3cbc242b88c607f55da3d0d0d336b49bf1e20412 (git) |
guessed | |
| Linux | Linux |
Affected:
3.0
Unaffected: 0 , < 3.0 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
guessed |
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: renesas_usbhs: fix use-after-free in ISR during device removal\n\nIn usbhs_remove(), the driver frees resources (including the pipe array)\nwhile the interrupt handler (usbhs_interrupt) is still registered. If an\ninterrupt fires after usbhs_pipe_remove() but before the driver is fully\nunbound, the ISR may access freed memory, causing a use-after-free.\n\nFix this by calling devm_free_irq() before freeing resources. This ensures\nthe interrupt handler is both disabled and synchronized (waits for any\nrunning ISR to complete) before usbhs_pipe_remove() is called."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T22:24:21.643Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/c7012fc73dab4829404fedeeaa8531f12ac8545f"
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{
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},
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{
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},
{
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{
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"url": "https://git.kernel.org/stable/c/6ffe44f022c95b1b29c691d2169c5abc046f7580"
},
{
"url": "https://git.kernel.org/stable/c/3cbc242b88c607f55da3d0d0d336b49bf1e20412"
}
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"title": "usb: renesas_usbhs: fix use-after-free in ISR during device removal",
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"datePublished": "2026-05-08T14:21:59.668Z",
"dateReserved": "2026-05-01T14:12:56.009Z",
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"date": "2026-09-16",
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This ensures\\nthe interrupt handler is both disabled and synchronized (waits for any\\nrunning ISR to complete) before usbhs_pipe_remove() is 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"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-06-28T07:37:38+00:00",
"cve": "CVE-2026-43426",
"id": "CVE-2026-43426",
"initial_release_date": "2026-05-08T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: usb: renesas_usbhs: fix use-after-free in ISR during device removal",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43426.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T01:17:40Z",
"cve": "CVE-2026-43426",
"id": "CVE-2026-43426",
"initial_release_date": "2026-05-13T03:34:06Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "703",
"product_status:known_not_affected": "17",
"product_status:recommended": "250",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-43426",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43426.json",
"version": "8"
}
}
}
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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.
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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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.
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