CVE-2022-49492 (GCVE-0-2022-49492)
Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2026-05-11 19:00
VLAI
EPSS
VEX
Title
nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
Summary
In the Linux kernel, the following vulnerability has been resolved:
nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
In nvme_alloc_admin_tags, the admin_q can be set to an error (typically
-ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which
is checked immediately after the call. However, when we return the error
message up the stack, to nvme_reset_work the error takes us to
nvme_remove_dead_ctrl()
nvme_dev_disable()
nvme_suspend_queue(&dev->queues[0]).
Here, we only check that the admin_q is non-NULL, rather than not
an error or NULL, and begin quiescing a queue that never existed, leading
to bad / NULL pointer dereference.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:38 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 8321b17789f614414206af07e17ce4751c95dc76
(git)
Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 9e649471b396fa0139d53919354ce1eace9b9a24 (git) Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 8da2b7bdb47e94bbc4062a3978c708926bcb022c (git) Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < f76729662650cd7bc8f8194e057af381370349a7 (git) Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < af98940dd33c9f9e1beb4f71c0a39260100e2a65 (git) Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 906c81dba8ee8057523859b5e1a2479e9fd34860 (git) Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 7a28556082d1fbcbc599baf1c24252dfc73efefc (git) Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < 54a4c1e47d1b2585e74920399455bd9abbfb2bd7 (git) Affected: 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 , < da42761181627e9bdc37d18368b827948a583929 (git) |
guessed | |
| Linux | Linux |
Affected:
3.19
Unaffected: 0 , < 3.19 (semver) Unaffected: 4.9.318 , ≤ 4.9.* (semver) Unaffected: 4.14.283 , ≤ 4.14.* (semver) Unaffected: 4.19.247 , ≤ 4.19.* (semver) Unaffected: 5.4.198 , ≤ 5.4.* (semver) Unaffected: 5.10.121 , ≤ 5.10.* (semver) Unaffected: 5.15.46 , ≤ 5.15.* (semver) Unaffected: 5.17.14 , ≤ 5.17.* (semver) Unaffected: 5.18.3 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix) |
guessed |
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"current_release_date": "2026-06-29T21:09:15+00:00",
"cve": "CVE-2022-49492",
"id": "CVE-2022-49492",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:fixed": "321",
"product_status:known_affected": "80",
"product_status:known_not_affected": "76",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags",
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"version": "3"
},
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"product_status:recommended": "363",
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"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49492.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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