CVE-2024-50297 net: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts
A race condition in the Xilinx AXI Ethernet driver causes a kernel crash during high-throughput network traffic, 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-2024-50297?
CVE-2024-50297 is a high-severity vulnerability in Linux kernel, published on 19 Nov 2024. 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: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts
Enqueue packets in dql after dma engine starts causes race condition. Tx transfer starts once dma engine is started and may execute dql dequeue in completion before it gets queued. It results in following kernel crash while running iperf stress test:
kernel BUG at lib/dynamic_queue_limits.c:99! <snip> Internal error: Oops - BUG: 00000000f2000800 [#1] SMP pc : dql_completed+0x238/0x248 lr : dql_completed+0x3c/0x248
Call trace: dql_completed+0x238/0x248 axienet_dma_tx_cb+0xa0/0x170 xilinx_dma_do_tasklet+0xdc/0x290 tasklet_action_common+0xf8/0x11c tasklet_action+0x30/0x3c handle_softirqs+0xf8/0x230 <snip>
Start dmaengine after enqueue in dql fixes the crash.
Weakness: CWE-362
Which versions are affected by CVE-2024-50297?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-50297?
Apply the vendor's patch.
Is CVE-2024-50297 being exploited?
There is no known exploitation of CVE-2024-50297 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-50297, DEBIAN-CVE-2024-50297, GHSA-rprq-p34w-2rvp, UBUNTU-CVE-2024-50297.