CVE-2021-26706 Integer overflow in n/a
Integer overflow in memory pool allocation functions allows attackers to create undersized pools, potentially leading to code execution or denial of service.
- 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-2021-26706?
CVE-2021-26706 is a critical vulnerability in n/a, published on 24 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in lib_mem.c in Micrium uC/OS uC/LIB 1.38.x and 1.39.00. The following memory allocation functions do not check for integer overflow when allocating a pool whose size exceeds the address space: Mem_PoolCreate, Mem_DynPoolCreate, and Mem_DynPoolCreateHW. Because these functions use multiplication to calculate the pool sizes, the operation may cause an integer overflow if the arguments are large enough. The resulting memory pool will be smaller than expected and may be exploited by an attacker.
Weakness: CWE-190
Which versions are affected by CVE-2021-26706?
It affects 1 product.
Products include Micrium Uc\/Lib.
How do I fix CVE-2021-26706?
No fix has been published for CVE-2021-26706 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26706 being exploited?
There is no known exploitation of CVE-2021-26706 in the wild and no public exploit code.
Sources
Also known as GHSA-7j9p-4w63-5mq8.