CVE-2022-50384 staging: vme_user: Fix possible UAF in tsi148_dma_list_add
A use-after-free vulnerability in the Linux kernel's VME user driver allows attackers to potentially execute arbitrary code or escalate privileges.
- 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-2022-50384?
CVE-2022-50384 is a high-severity use after free vulnerability in Linux kernel, published on 18 Sep 2025. 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:
staging: vme_user: Fix possible UAF in tsi148_dma_list_add
Smatch report warning as follows:
drivers/staging/vme_user/vme_tsi148.c:1757 tsi148_dma_list_add() warn: '&entry->list' not removed from list
In tsi148_dma_list_add(), the error path "goto err_dma" will not remove entry->list from list->entries, but entry will be freed, then list traversal may cause UAF.
Fix by removeing it from list->entries before free().
Weakness: CWE-416
Which versions are affected by CVE-2022-50384?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50384?
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-2022-50384 being exploited?
There is no known exploitation of CVE-2022-50384 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50384, GHSA-8j88-p9vm-9wrx, UBUNTU-CVE-2022-50384.