Linux
32 Linux flaws are on CISA's list of vulnerabilities attackers have used, 9 of them added in 2026. CISA says 2 are known to be used by ransomware. The latest was added Oct 28, 2026.
32on CISA's list, all time
9added in 2026
6in the last 90 days
2used by ransomware
0zero-days, all time
Exploited flaws added each year
Most-hit products
| Product | Exploited flaws | Most recent |
|---|---|---|
| Kernel | 32 | Oct 28, 2026 |
Latest Linux flaws
- KernelLinux Kernel Missing Initialization of a Variable Vulnerability
- KernelLinux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability
- KernelLinux Kernel Race Condition Vulnerability
- KernelLinux Kernel Out-of-Bounds Write Vulnerability
- KernelLinux Kernel Unspecified Vulnerability
- KernelLinux Kernel Out-of-Bounds Write Vulnerability
- KernelLinux Kernel Improper Authentication Vulnerability
- KernelLinux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
- KernelLinux Kernel Integer Overflow Vulnerability
- KernelLinux Kernel Heap Out-of-Bounds Write Vulnerability
- KernelLinux Kernel Time-of-Check Time-of-Use (TOCTOU) Race Condition Vulnerability
- KernelLinux Kernel Improper Ownership Management Vulnerability
- KernelLinux Kernel Out-of-Bounds Read Vulnerability
- KernelLinux Kernel Out-of-Bounds Access Vulnerability
- KernelLinux Kernel Use of Uninitialized Resource Vulnerability
Counts come from CISA's Known Exploited Vulnerabilities catalog, which lists flaws with reliable evidence of real attacks. A higher count often reflects how widely a vendor's products are used and targeted, not only how secure they are.