CVE-2025-68302 net: sxgbe: fix potential NULL dereference in sxgbe_rx()
A NULL pointer dereference in the sxgbe network driver can cause a kernel crash, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-68302?
CVE-2025-68302 is a high-severity vulnerability in Linux, published on 16 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: sxgbe: fix potential NULL dereference in sxgbe_rx()
Currently, when skb is null, the driver prints an error and then dereferences skb on the next line.
To fix this, let's add a 'break' after the error message to switch to sxgbe_rx_refill(), which is similar to the approach taken by the other drivers in this particular case, e.g. calxeda with xgmac_rx().
Found during a code review.
Which versions are affected by CVE-2025-68302?
How do I fix CVE-2025-68302?
Apply the vendor's patch.
Is CVE-2025-68302 being exploited?
There is no known exploitation of CVE-2025-68302 in the wild and no public exploit code.
Sources
Also known as AZL-72676, BELL-CVE-2025-68302, DEBIAN-CVE-2025-68302, GHSA-rxmp-73hh-6v66, ROOT-OS-DEBIAN-12-CVE-2025-68302, ROOT-OS-DEBIAN-13-CVE-2025-68302 and 3 more.