CVE-2026-63825
Description
A flaw was found in the Linux kernel. When the GCOV instrumentation, which helps analyze code coverage, processes data concurrently across multiple central processing units (CPUs), it can lead to inconsistent counter values. This inconsistency can cause out-of-bounds memory writes within the inflate_fast() function during IP Payload Compression (IPComp) processing. The primary consequence of this vulnerability is a system crash, resulting in a Denial of Service (DoS).
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Frequently Asked Questions
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