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Unrated severityNVD Advisory· Published Feb 26, 2025· Updated Dec 23, 2025

nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags

CVE-2022-49492

Description

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

nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags

In nvme_alloc_admin_tags, the admin_q can be set to an error (typically -ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which is checked immediately after the call. However, when we return the error message up the stack, to nvme_reset_work the error takes us to nvme_remove_dead_ctrl() nvme_dev_disable() nvme_suspend_queue(&dev->queues[0]).

Here, we only check that the admin_q is non-NULL, rather than not an error or NULL, and begin quiescing a queue that never existed, leading to bad / NULL pointer dereference.

Affected products

136

Patches

0

No patches discovered yet.

Vulnerability mechanics

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References

9

News mentions

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