CVE-2021-47614 RDMA/irdma: Fix a user-after-free in add_pble_prm
A use-after-free vulnerability in the Linux kernel's RDMA driver allows attackers to potentially execute code or cause a system crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-47614?
CVE-2021-47614 is a high-severity use after free vulnerability in Linux kernel, published on 19 Jun 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
RDMA/irdma: Fix a user-after-free in add_pble_prm
When irdma_hmc_sd_one fails, 'chunk' is freed while its still on the PBLE info list.
Add the chunk entry to the PBLE info list only after successful setting of the SD in irdma_hmc_sd_one.
Weakness: CWE-416
Which versions are affected by CVE-2021-47614?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47614?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2021-47614 being exploited?
There is no known exploitation of CVE-2021-47614 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47614, GHSA-wjfp-mxjr-ch9p, UBUNTU-CVE-2021-47614.