CVE-2026-43210

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 < b4700c089a10f89de3a5149d57f8a58306458982affected
LinuxLinux5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 < 5026010110a5ad2268d8c23e1e286ab7c736f7acaffected
LinuxLinux5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 < 9eb80e54494ef1efef8a64bec4ffa672c9cf411eaffected
LinuxLinux5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 < 912b0ee248c529a4f45d1e7f568dc1adddbf2a4aaffected
LinuxLinux6.12affected
LinuxLinux0 < 6.12unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References