CVE-2021-40507 Other in n/a
Incorrect overflow flag handling in the OpenRISC ALU can cause execution corruption in software relying on this flag.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40507?
CVE-2021-40507 is a critical vulnerability in n/a, published on 18 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-287
Which versions are affected by CVE-2021-40507?
It affects 1 product.
Products include Openrisc Or1200 Firmware.
How do I fix CVE-2021-40507?
No fix has been published for CVE-2021-40507 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-40507 being exploited?
There is no known exploitation of CVE-2021-40507 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-fw2g-jg6j-943h.