Paper/Archive/CVE-2021-40506

CVE-2021-40506

mitre — An issue was discovered in the ALU unit of the OR1200 (aka OpenRISC 1200) processor 2011-09-10 through 2015-11-11.

EPSS 0.7%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 54.2.542 × 2010.8 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/openrisc/or1200/commit/2c0765d7ba12813df273cd693a99c4e744f0fbd5 refseth.engr.tamu.edu/software-releases/thehuzz