CVE-2026-31743
Description
A flaw was found in the Linux kernel, specifically within the nvmem and zynqmp_nvmem modules. An incorrect buffer size used during Direct Memory Access (DMA) allocation and memcpy operations can lead to undersized DMA buffer access. This vulnerability could allow a local attacker to cause memory corruption, potentially leading to system instability or denial of service.
Understanding the Weakness (CWE)
Integrity,Availability,Confidentiality
Technical Impact: DoS: Crash, Exit, or Restart; Execute Unauthorized Code or Commands; Read Memory; Modify Memory
If the incorrect calculation is used in the context of memory allocation, then the software may create a buffer that is smaller or larger than expected. If the allocated buffer is smaller than expected, this could lead to an out-of-bounds read or write (CWE-119), possibly causing a crash, allowing arbitrary code execution, or exposing sensitive data.
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