Ubuntu Security Notice 6920-1 - It was discovered that EDK II was not properly performing bounds checks in Tianocompress, which could lead to a buffer overflow. An authenticated user could use this issue to potentially escalate their privileges via local access. It was discovered that EDK II had an insufficient memory write check in the SMM service, which could lead to a page fault occurring. An authenticated user could use this issue to potentially escalate their privileges, disclose information and/or create a denial of service via local access.
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