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CVE-2021-42252

Related Vulnerabilities: CVE-2021-42252  

An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes.

Source

Description

The MITRE CVE dictionary describes this issue as:

An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes.

Additional Information

  • Bugzilla 2013097: CVE-2021-42252 kernel: memory overwrite in the kernel with potential privileges execution
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • FAQ: Frequently asked questions about CVE-2021-42252

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