CVE-2024-49569

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

nvme-rdma: unquiesce admin_q before destroy it

Kernel will hang on destroy admin_q while we create ctrl failed, such

as following calltrace:

PID: 23644 TASK: ff2d52b40f439fc0 CPU: 2 COMMAND: "nvme"

#0 [ff61d23de260fb78] __schedule at ffffffff8323bc15

#1 [ff61d23de260fc08] schedule at ffffffff8323c014

#2 [ff61d23de260fc28] blk_mq_freeze_queue_wait at ffffffff82a3dba1

#3 [ff61d23de260fc78] blk_freeze_queue at ffffffff82a4113a

#4 [ff61d23de260fc90] blk_cleanup_queue at ffffffff82a33006

#5 [ff61d23de260fcb0] nvme_rdma_destroy_admin_queue at ffffffffc12686ce

#6 [ff61d23de260fcc8] nvme_rdma_setup_ctrl at ffffffffc1268ced

#7 [ff61d23de260fd28] nvme_rdma_create_ctrl at ffffffffc126919b

#8 [ff61d23de260fd68] nvmf_dev_write at ffffffffc024f362

#9 [ff61d23de260fe38] vfs_write at ffffffff827d5f25

RIP: 00007fda7891d574 RSP: 00007ffe2ef06958 RFLAGS: 00000202

RAX: ffffffffffffffda RBX: 000055e8122a4d90

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References