CVE-2024-50297: net: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts
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/dynamicqueuelimits.c:99! <snip> Internal error: Oops - BUG: 00000000f2000800 [#1] SMP pc : dqlcompleted+0x238/0x248 lr : dqlcompleted+0x3c/0x248
Call trace: dqlcompleted+0x238/0x248 axienetdmatxcb+0xa0/0x170 xilinxdmadotasklet+0xdc/0x290 taskletactioncommon+0xf8/0x11c taskletaction+0x30/0x3c handlesoftirqs+0xf8/0x230 <snip>
Start dmaengine after enqueue in dql fixes the crash.
Other sources
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— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-50297?
CVE-2024-50297 has been classified with a severity that indicates a potential race condition in the Linux kernel's handling of Tx packets.
How do I fix CVE-2024-50297?
To remediate CVE-2024-50297, update to a patched version of the Linux kernel, such as those released after 6.12.15-1.
Which versions of the Linux kernel are affected by CVE-2024-50297?
CVE-2024-50297 affects Linux kernel versions from 6.8 to 6.11.8, as well as specific 6.12 release candidates.
What are the potential impacts of CVE-2024-50297?
The vulnerability can lead to unexpected behavior and potential security breaches due to a race condition during packet transfer.
Is CVE-2024-50297 specific to any Linux distribution?
CVE-2024-50297 affects the Linux kernel and is not limited to any specific distribution, though it requires patching to the kernel version.