CVE-2022-49003
A critical bug in the Linux kernel’s NVMe driver can cause the system to crash when NVMe devices are scanned concurrently. The flaw allows a use‑after‑free that leads to a kernel panic, disrupting service. It is a severe issue that can affect any Linux system running an unpatched kernel.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel, including all current releases such as 6.1 and earlier versions that have not applied the NVMe SRCU protection fix. System administrators and users of unpatched Linux distributions are at risk.
Real-world impact
An attacker could trigger a kernel crash, causing a denial of service and potentially exposing the system to further compromise if the crash is leveraged in a larger attack chain.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability can be exploited remotely (AV:N) with no authentication (PR:N) and no user interaction (UI:N). It results in complete loss of confidentiality, integrity, and availability, making it a critical threat.
What to do about it
- 01Upgrade the Linux kernel to a version that includes the nvme SRCU protection fix.
- 02Restart the system to load the updated kernel.
NVD-referenced vendor advisory
Timeline
- Oct 21, 2024 · Oct 21, 2024PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 4, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.