CVE-2026-45967
Description
A flaw was found in the Linux kernel. Specifically, a bug in the map_direct_value_addr() function, which is part of the Berkeley Packet Filter (BPF) instruction array map, leads to incorrect address calculations when dealing with non-zero offsets. This issue could result in the kernel accessing unintended memory locations. While the direct security impact is not explicitly detailed, such memory access issues can potentially lead to system instability or information exposure.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the untrusted pointer is used in a read operation, an attacker might be able to read sensitive portions of memory.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the untrusted pointer references a memory location that is not accessible to the program, or points to a location that is "malformed" or larger than expected by a read or write operation, the application may terminate unexpectedly.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands; Modify Memory
If the untrusted pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
