CVE-2022-48673
A critical bug in the Linux kernel’s SMC (SMC link clear) can cause a crash by accessing freed memory. The flaw is triggered when a QP is moved to the Error state, leading to a kernel panic. It affects all kernel versions that have not applied the fix.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel (all versions before the fix) on systems using the SMC feature, typically servers and devices running the kernel.
Real-world impact
An attacker could crash the kernel, causing a denial of service and potentially allowing privilege escalation if they can execute code in kernel mode.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability requires no authentication or user interaction, yet it gives an attacker full control over confidentiality, integrity, and availability by crashing the kernel.
What to do about it
- 01Update the Linux kernel to a version that includes the fix for CVE-2022-48673.
- 02Reboot the system to load the updated kernel.
NVD-referenced vendor advisory
Timeline
- May 3, 2024 · May 3, 2024PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 5, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.