CVE-2022-49003

System crash via unprotected NVMe namespace traversal

Published Oct 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel NVMe multipath subsystem allows local users to crash the system during concurrent namespace scans. nvme_mpath_revalidate_paths() walks the nvme_ns_head sibling list without the head's SRCU lock, while nvme_ns_remove() frees namespaces without synchronizing that SRCU domain. The crash requires local low-privileged access, native NVMe multipath, and concurrent scan or namespace-removal work; the demonstrated consequence is a kernel panic, not confidentiality or integrity loss.

CVSS severity4.7
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel NVMe multipath subsystem allows local users to crash the system during concurrent namespace scans. nvme_mpath_revalidate_paths() walks the nvme_ns_head sibling list without the head's SRCU lock, while nvme_ns_remove() frees namespaces without synchronizing that SRCU domain. The crash requires local low-privileged access, native NVMe multipath, and concurrent scan or namespace-removal work; the demonstrated consequence is a kernel panic, not confidentiality or integrity loss.

The record

CVE
CVE-2022-49003
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.15
  2. Affected versionversion=e7d65803e2bb5bc739548b67a5fc72c626cf7e3b <5b566d09ab1b975566a53f9c5466ee260d087582
  3. Affected versionversion=e7d65803e2bb5bc739548b67a5fc72c626cf7e3b <787d81d4eb150e443e5d1276c6e8f03cfecc2302
  4. Affected versionversion=e7d65803e2bb5bc739548b67a5fc72c626cf7e3b <899d2a05dc14733cfba6224083c6b0dd5a738590

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=e7d65803e2bb5bc739548b67a5fc72c626cf7e3b <5b566d09ab1b975566a53f9c5466ee260d087582; version=e7d65803e2bb5bc739548b67a5fc72c626cf7e3b <787d81d4eb150e443e5d1276c6e8f03cfecc2302; version=e7d65803e2bb5bc739548b67a5fc72c626cf7e3b <899d2a05dc14733cfba6224083c6b0dd5a738590

Published CVSS scores

4.7CanonicalCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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