CVE-2024-26684 net: stmmac: xgmac: fix handling of DPP safety error for DMA channels
A missing interrupt status check in the Linux kernel's XGMAC driver causes an interrupt storm, leading to denial of service.
- 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-2024-26684?
CVE-2024-26684 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 2 Apr 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:
net: stmmac: xgmac: fix handling of DPP safety error for DMA channels
Commit 56e58d6c8a56 ("net: stmmac: Implement Safety Features in XGMAC core") checks and reports safety errors, but leaves the Data Path Parity Errors for each channel in DMA unhandled at all, lead to a storm of interrupt. Fix it by checking and clearing the DMA_DPP_Interrupt_Status register.
Which versions are affected by CVE-2024-26684?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2024-26684?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-26684 being exploited?
There is no known exploitation of CVE-2024-26684 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2024-26684, DEBIAN-CVE-2024-26684, GHSA-vx76-2j88-69mq, UBUNTU-CVE-2024-26684.