Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tracing: ring-buffer: Fix to check event length before using Check the event length before adding it for accessing next index in rb_read_data_buffer(). Since this function is used for validating possibly broken ring buffers, the length of the event could be broken. In that case, the new event (e + len) can point a wrong address. To avoid invalid memory access at boot, check whether the length of each event is in the possible range before using it.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.12, < 6.12.75 |
References
- https://git.kernel.org/stable/c/5026010110a5ad2268d8c23e1e286ab7c736f7acPatch
- https://git.kernel.org/stable/c/912b0ee248c529a4f45d1e7f568dc1adddbf2a4aPatch
- https://git.kernel.org/stable/c/9eb80e54494ef1efef8a64bec4ffa672c9cf411ePatch
- https://git.kernel.org/stable/c/b4700c089a10f89de3a5149d57f8a58306458982Patch
FAQ
What is CVE-2026-43210?
CVE-2026-43210 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: tracing: ring-buffer: Fix to check event length before using Check the event length before adding it for accessing next index in r...
How severe is CVE-2026-43210?
CVE-2026-43210 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43210?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.