CVE-2022-50137 (GCVE-0-2022-50137)
Vulnerability from cvelistv5 – Published: 2025-06-18 11:03 – Updated: 2026-08-05 08:57
VLAI
EPSS
VEX
Title
RDMA/irdma: Fix a window for use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved:
RDMA/irdma: Fix a window for use-after-free
During a destroy CQ an interrupt may cause processing of a CQE after CQ
resources are freed by irdma_cq_free_rsrc(). Fix this by moving the call
to irdma_cq_free_rsrc() after the irdma_sc_cleanup_ceqes(), which is
called under the cq_lock.
Severity
7.8 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
b48c24c2d710cf34810c555dcef883a3d35a9c08 , < 92520864ef9f912f38b403d172a0ded020683d55
(git)
Affected: b48c24c2d710cf34810c555dcef883a3d35a9c08 , < 0abf2eef80295923b819ce89ff9edc1fe61be17c (git) Affected: b48c24c2d710cf34810c555dcef883a3d35a9c08 , < 350ac793a03c8a30a3f2b27fc282cd1c67070763 (git) Affected: b48c24c2d710cf34810c555dcef883a3d35a9c08 , < 8ecef7890b3aea78c8bbb501a4b5b8134367b821 (git) |
guessed | |
| Linux | Linux |
Affected:
5.14
Unaffected: 0 , < 5.14 (semver) Unaffected: 5.15.61 , ≤ 5.15.* (semver) Unaffected: 5.18.18 , ≤ 5.18.* (semver) Unaffected: 5.19.2 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "AV:L - The bug is triggered by destroying an irdma completion queue through the RDMA verbs path (/dev/infiniband/uverbs* \u2192 ib_uverbs_destroy_cq \u2192 irdma_destroy_cq); no remote packet parser reaches this free path.\nAC:L - An attacker who owns the RDMA context controls both sides of the race\u2014posting work to keep CEQ completions pending and concurrently destroying the CQ\u2014so the window between irdma_cq_free_rsrc() and irdma_sc_cleanup_ceqes() can be hit reliably by retrying.\nPR:L - InfiniBand user verbs are intended for unprivileged processes, and creating/destroying a CQ requires only an RDMA uverbs context, not capabilities in the init user namespace.\nUI:N - The attacker performs the verbs operations themselves; no action by another user is required.\nS:U - The use-after-free corrupts kernel memory within the same OS security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Use-after-free of CQ resources while irdma_process_ceq()/irdma_sc_process_ceq() still handles CEQEs allows reclaim of freed DMA/slab state and attacker-controlled reads via the completion path.\nI:H - The same UAF lets the interrupt path operate on freed/reclaimed CQ state (including irdma_sc_cq_ack() doorbell writes and irdma_iwarp_ce_handler()\u0027s indirect comp_handler call), enabling arbitrary write and control-flow hijack primitives.\nA:H - Even without full exploitation, processing CEQEs against freed CQ resources causes kernel oops/panic in interrupt/softirq context and takes the system down."
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: RDMA/irdma: Fix a window for use-after-free",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50137.json",
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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
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