CVE-2021-27504 Texas Instruments FREERTOS Integer Overflow or Wraparound
An integer overflow in FreeRTOS malloc allows attackers to execute arbitrary code on affected Texas Instruments embedded devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-27504?
CVE-2021-27504 is a high-severity vulnerability in Texas Instruments CC32XX, published on 21 Nov 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Texas Instruments devices running FREERTOS, malloc returns a valid pointer to a small buffer on extremely large values, which can trigger an integer overflow vulnerability in 'malloc' for FreeRTOS, resulting in code execution.
Weakness: CWE-190
Which versions are affected by CVE-2021-27504?
It affects 6 products.
Products include Amazon Freertos, Ti Simplelink Cc13xx Software Development Kit, Ti Simplelink Cc26xx Software Development Kit, Ti Simplelink Cc32xx Software Development Kit, Ti Simplelink Msp432e401y, Ti Simplelink Msp432e411y.
How do I fix CVE-2021-27504?
No fix has been published for CVE-2021-27504 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-27504 being exploited?
There is no known exploitation of CVE-2021-27504 in the wild and no public exploit code.
Other vulnerabilities in Texas Instruments CC32XX
- CVE-2021-32020 Memory corruption in n/a
- CVE-2021-31571 Integer overflow in n/a
- CVE-2021-31572 Integer overflow in n/a
- CVE-2026-77234 Improper input validation in FreeRTOS-Kernel timer command handling
- CVE-2024-28115 Privilege Escalation in FreeRTOS Kernel ARMv7-M MPU ports and ARMv8-M ports with MPU support enabled
Sources
Also known as GHSA-6627-82c3-q8c9.