CVE-2022-48791 (GCVE-0-2022-48791)
Vulnerability from cvelistv5 – Published: 2024-07-16 11:43 – Updated: 2026-08-05 08:52
VLAI
EPSS
VEX
Title
scsi: pm8001: Fix use-after-free for aborted TMF sas_task
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: pm8001: Fix use-after-free for aborted TMF sas_task
Currently a use-after-free may occur if a TMF sas_task is aborted before we
handle the IO completion in mpi_ssp_completion(). The abort occurs due to
timeout.
When the timeout occurs, the SAS_TASK_STATE_ABORTED flag is set and the
sas_task is freed in pm8001_exec_internal_tmf_task().
However, if the I/O completion occurs later, the I/O completion still
thinks that the sas_task is available. Fix this by clearing the ccb->task
if the TMF times out - the I/O completion handler does nothing if this
pointer is cleared.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:59 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
968ee9176a4489ce6d5ee54ff88dadfbff9b95f4 , < d872e7b5fe38f325f5206b6872746fa02c2b4819
(git)
Affected: d712d3fb484b7fa8d1d57e9ca6f134bb9d8c18b1 , < 3c334cdfd94945b8edb94022a0371a8665b17366 (git) Affected: d712d3fb484b7fa8d1d57e9ca6f134bb9d8c18b1 , < 510b21442c3a2e3ecc071ba3e666b320e7acdd61 (git) Affected: d712d3fb484b7fa8d1d57e9ca6f134bb9d8c18b1 , < 61f162aa4381845acbdc7f2be4dfb694d027c018 (git) Affected: fa3c19ceaa8b4b7c29d710c2c407df57d256a6c5 (git) Affected: 5.10.61 , < 5.10.102 (semver) Affected: 5.13.13 , < 5.14 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.14
Unaffected: 0 , < 5.14 (semver) Unaffected: 5.10.102 , ≤ 5.10.* (semver) Unaffected: 5.15.25 , ≤ 5.15.* (semver) Unaffected: 5.16.11 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix) |
guessed |
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"url": "https://git.kernel.org/stable/c/61f162aa4381845acbdc7f2be4dfb694d027c018"
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"content": {
"id": "CVE-2022-48791",
"options": [
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"Exploitation": "none"
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{
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{
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"role": "CISA Coordinator",
"timestamp": "2024-09-10T16:59:35.678672Z",
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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"programFiles": [
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"version": "fa3c19ceaa8b4b7c29d710c2c407df57d256a6c5",
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{
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"status": "affected",
"version": "5.10.61",
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{
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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{
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"version": "5.15.25",
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{
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"status": "unaffected",
"version": "5.16.11",
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{
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"status": "unaffected",
"version": "5.17",
"versionType": "original_commit_for_fix"
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm8001: Fix use-after-free for aborted TMF sas_task\n\nCurrently a use-after-free may occur if a TMF sas_task is aborted before we\nhandle the IO completion in mpi_ssp_completion(). The abort occurs due to\ntimeout.\n\nWhen the timeout occurs, the SAS_TASK_STATE_ABORTED flag is set and the\nsas_task is freed in pm8001_exec_internal_tmf_task().\n\nHowever, if the I/O completion occurs later, the I/O completion still\nthinks that the sas_task is available. Fix this by clearing the ccb-\u003etask\nif the TMF times out - the I/O completion handler does nothing if this\npointer is cleared."
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"version": "3.1"
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"value": "AV:L - The UAF is in the pm8001 PCIe SAS HBA driver and is reached via the local SCSI/block I/O and error-handling path (libsas EH \u2192 lldd_abort_task/query_task/lu_reset \u2192 pm8001_issue_ssp_tmf), not via network packets or physical device attachment.\nAC:L - An attacker who can submit I/O can drive SCSI EH into the TMF path; when the target/link is unresponsive (the common EH case), the 20s TMF timeout frees the sas_task while ccb-\u003etask remains set, leaving a wide, reliable window for the later mpi_ssp_completion UAF.\nPR:L - Triggering requires only unprivileged local access to a block/SCSI device backed by the pm8001 HBA (e.g., disk-group or container volume access), not real root or init-namespace admin privileges.\nUI:N - No victim action is required; the attacker initiates I/O that leads to EH/TMF and the subsequent completion UAF without cooperation from another user.\nS:U - This is a standard in-kernel use-after-free within the host OS authority and does not cross a VM, IOMMU, or other security boundary.\nC:H - mpi_ssp_completion loads the dangling ccb-\u003etask and reads fields from the freed sas_task, so a UAF gives an attacker-controlled object and a high-impact information-disclosure primitive.\nI:H - The completion path writes into the freed sas_task (task_status/state flags) and may invoke t-\u003etask_done(t), yielding a classic heap UAF write/control-flow hijack primitive for arbitrary code execution.\nA:H - Use of the freed sas_task in interrupt/completion context can oops/panic the kernel even without a full exploit, so availability impact is high."
}
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"datePublished": "2024-07-16T11:43:47.211Z",
"dateReserved": "2024-07-16T11:38:08.893Z",
"dateUpdated": "2026-08-05T08:52:21.770Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
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}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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.