CVE-2025-68197 bnxt_en: Fix null pointer dereference in bnxt_bs_trace_check_wrap()
A null pointer dereference in the bnxt_en driver can cause a kernel crash, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-68197?
CVE-2025-68197 is a vulnerability in Linux, published on 16 Dec 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:
bnxt_en: Fix null pointer dereference in bnxt_bs_trace_check_wrap()
With older FW, we may get the ASYNC_EVENT_CMPL_EVENT_ID_DBG_BUF_PRODUCER for FW trace data type that has not been initialized. This will result in a crash in bnxt_bs_trace_type_wrap(). Add a guard to check for a valid magic_byte pointer before proceeding.
Which versions are affected by CVE-2025-68197?
How do I fix CVE-2025-68197?
Apply the vendor's patch.
Is CVE-2025-68197 being exploited?
There is no known exploitation of CVE-2025-68197 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68197, DEBIAN-CVE-2025-68197, GHSA-x9w6-jqxg-cp95, UBUNTU-CVE-2025-68197.