CVE-2026-23306 (GCVE-0-2026-23306)
Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-08-05 12:21
VLAI
EPSS
VEX
Title
scsi: pm8001: Fix use-after-free in pm8001_queue_command()
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: pm8001: Fix use-after-free in pm8001_queue_command()
Commit e29c47fe8946 ("scsi: pm8001: Simplify pm8001_task_exec()") refactors
pm8001_queue_command(), however it introduces a potential cause of a double
free scenario when it changes the function to return -ENODEV in case of phy
down/device gone state.
In this path, pm8001_queue_command() updates task status and calls
task_done to indicate to upper layer that the task has been handled.
However, this also frees the underlying SAS task. A -ENODEV is then
returned to the caller. When libsas sas_ata_qc_issue() receives this error
value, it assumes the task wasn't handled/queued by LLDD and proceeds to
clean up and free the task again, resulting in a double free.
Since pm8001_queue_command() handles the SAS task in this case, it should
return 0 to the caller indicating that the task has been handled.
Severity
7.8 (High)
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
e29c47fe8946cc732b0e0d393b65b13c84bb69d0 , < ebbb852ffbc952b95ddb7e3872b67b3e74c6da47
(git)
Affected: e29c47fe8946cc732b0e0d393b65b13c84bb69d0 , < 8b00427317ba7b7ec91252b034009f638d0f311b (git) Affected: e29c47fe8946cc732b0e0d393b65b13c84bb69d0 , < c5dc39f8ae055520fd778b7fb0423f11586f15c4 (git) Affected: e29c47fe8946cc732b0e0d393b65b13c84bb69d0 , < 824a7672e3540962d5c77d4c6666254d7aa6f0b3 (git) Affected: e29c47fe8946cc732b0e0d393b65b13c84bb69d0 , < 227ff4af00abc40b95123cc27ee8079069dcd8d7 (git) Affected: e29c47fe8946cc732b0e0d393b65b13c84bb69d0 , < 38353c26db28efd984f51d426eac2396d299cca7 (git) |
guessed | |
| Linux | Linux |
Affected:
5.18
Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.77 , ≤ 6.12.* (semver) Unaffected: 6.18.17 , ≤ 6.18.* (semver) Unaffected: 6.19.7 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "AV:L - The pm8001 is a PCI-based SAS/SATA host bus adapter driver. Triggering this vulnerability requires local access to submit SCSI/ATA commands to a device managed by this HBA, which is done through local SCSI device interfaces.\nAC:L - The vulnerability triggers deterministically when I/O is submitted to a SATA device that is in the \"gone\" state. The attacker can control the device removal (e.g., by physically disconnecting a SATA drive or through hotplug) and then issue I/O, reliably triggering the double-free.\nPR:L - Submitting SCSI commands requires access to SCSI device files (e.g., /dev/sdX), which typically requires at least basic user-level access with appropriate device permissions. Root is not strictly required if the user has group access to the device.\nUI:N - No user interaction is required. The attacker can trigger the vulnerability by issuing I/O commands to a gone device independently.\nS:U - The vulnerability affects the kernel within its own security authority. There is no crossing of a security boundary such as a VM escape or sandbox escape.\nC:H - A double-free on slab memory (kmem_cache) is a powerful exploitation primitive. Through heap spraying, an attacker can control the contents of the reallocated object, potentially achieving arbitrary kernel memory read capabilities.\nI:H - The double-free allows an attacker to reclaim the freed slab object with controlled data, enabling type confusion and arbitrary kernel memory write primitives that can lead to code execution.\nA:H - The double-free will at minimum cause a kernel crash/panic when the slab allocator detects corruption, and can also be used to cause repeated crashes for denial of service."
}
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm8001: Fix use-after-free in pm8001_queue_command()\n\nCommit e29c47fe8946 (\"scsi: pm8001: Simplify pm8001_task_exec()\") refactors\npm8001_queue_command(), however it introduces a potential cause of a double\nfree scenario when it changes the function to return -ENODEV in case of phy\ndown/device gone state.\n\nIn this path, pm8001_queue_command() updates task status and calls\ntask_done to indicate to upper layer that the task has been handled.\nHowever, this also frees the underlying SAS task. A -ENODEV is then\nreturned to the caller. When libsas sas_ata_qc_issue() receives this error\nvalue, it assumes the task wasn\u0027t handled/queued by LLDD and proceeds to\nclean up and free the task again, resulting in a double free.\n\nSince pm8001_queue_command() handles the SAS task in this case, it should\nreturn 0 to the caller indicating that the task has been handled."
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nscsi: pm8001: Correcci\u00f3n de uso despu\u00e9s de liberaci\u00f3n en pm8001_queue_command()\n\nEl commit e29c47fe8946 (\u0027scsi: pm8001: Simplificar pm8001_task_exec()\u0027) refactoriza pm8001_queue_command(), sin embargo, introduce una causa potencial de un escenario de doble liberaci\u00f3n cuando cambia la funci\u00f3n para que devuelva -ENODEV en caso de estado de phy inactivo/dispositivo desaparecido.\n\nEn esta ruta, pm8001_queue_command() actualiza el estado de la tarea y llama a task_done para indicar a la capa superior que la tarea ha sido gestionada. Sin embargo, esto tambi\u00e9n libera la tarea SAS subyacente. Entonces se devuelve un -ENODEV al llamador. Cuando libsas sas_ata_qc_issue() recibe este valor de error, asume que la tarea no fue gestionada/enviada a la cola por LLDD y procede a limpiar y liberar la tarea de nuevo, resultando en una doble liberaci\u00f3n.\n\nDado que pm8001_queue_command() gestiona la tarea SAS en este caso, deber\u00eda devolver 0 al llamador indicando que la tarea ha sido gestionada."
}
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"id": "CVE-2026-23306",
"lastModified": "2026-06-17T10:21:17.810",
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"value": "CWE-416"
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"title": "kernel: scsi: pm8001: Fix use-after-free in pm8001_queue_command()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23306.json",
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}
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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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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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