CVE-2024-47735: RDMA/hns: Fix spin_unlock_irqrestore() called with IRQs enabled
In the Linux kernel, the following vulnerability has been resolved:
RDMA/hns: Fix spinunlockirqrestore() called with IRQs enabled
Fix missuse of spinlockirq()/spinunlockirq() when spinlockirqsave()/spinlockirqrestore() was hold.
This was discovered through the lock debugging, and the corresponding log is as follows:
rawlocalirqrestore() called with IRQs enabled WARNING: CPU: 96 PID: 2074 at kernel/locking/irqflag-debug.c:10 warnbogusirqrestore+0x30/0x40 ... Call trace: warnbogusirqrestore+0x30/0x40 rawspinunlockirqrestore+0x84/0xc8 addqptolist+0x11c/0x148 [hnsrocehwv2] hnsrocecreateqpcommon.constprop.0+0x240/0x780 [hnsrocehwv2] hnsrocecreateqp+0x98/0x160 [hnsrocehwv2] createqp+0x138/0x258 ibcreateqpkernel+0x50/0xe8 createmadqp+0xa8/0x128 ibmadportopen+0x218/0x448 ibmadinitdevice+0x70/0x1f8 addclientcontext+0xfc/0x220 enabledeviceandget+0xd0/0x140 ibregisterdevice.part.0+0xf4/0x1c8 ibregisterdevice+0x34/0x50 hnsroceregisterdevice+0x174/0x3d0 [hnsrocehwv2] hnsroceinit+0xfc/0x2c0 [hnsrocehwv2] hnsrocehwv2initinstance+0x7c/0x1d0 [hnsrocehwv2] hnsrocehwv2initinstance+0x9c/0x180 [hnsrocehwv2]
Other sources
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— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-47735?
CVE-2024-47735 is considered a moderate severity vulnerability in the Linux Kernel.
How do I fix CVE-2024-47735?
To fix CVE-2024-47735, update your Linux kernel to a version that is not vulnerable, specifically version 6.1.123-1 or higher.
What systems are affected by CVE-2024-47735?
CVE-2024-47735 affects various versions of the Linux kernel, specifically versions between 4.9 and 6.11.2.
Is there a workaround for CVE-2024-47735?
There are no known workarounds for CVE-2024-47735; updating the kernel is the recommended action.
When was CVE-2024-47735 disclosed?
CVE-2024-47735 was disclosed as part of ongoing security monitoring for vulnerabilities in the Linux kernel.