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CVE-2021-40507

An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015-11-11. The overflow flag is not being updated correctly for the subtract instruction, which results in an incorrect value in the overflow flag. Any software that relies on this flag may experience corruption in execution.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Openrisc
Products
Or1200 Or1200 Firmware
CVE-2021-40506

An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015-11-11. The overflow flag is not being updated for the msb and mac instructions, which results in an incorrect value in the overflow flag. Any software that relies on this flag may experience corruption in execution.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Openrisc
Products
Or1200 Or1200 Firmware