CVE-2024-50135

Summary

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix race condition between reset and nvme_dev_disable() nvme_dev_disable() modifies the dev->online_queues field, therefore nvme_pci_update_nr_queues() should avoid racing against it, otherwise we could end up passing invalid values to blk_mq_update_nr_hw_queues(). WARNING: CPU: 39 PID: 61303 at drivers/pci/msi/api.c:347 pci_irq_get_affinity+0x187/0x210 Workqueue: nvme-reset-wq nvme_reset_work [nvme] RIP: 0010:pci_irq_get_affinity+0x187/0x210 Call Trace: <TASK> ? blk_mq_pci_map_queues+0x87/0x3c0 ? pci_irq_get_affinity+0x187/0x210 blk_mq_pci_map_queues+0x87/0x3c0 nvme_pci_map_queues+0x189/0x460 [nvme] blk_mq_update_nr_hw_queues+0x2a/0x40 nvme_reset_work+0x1be/0x2a0 [nvme] Fix the bug by locking the shutdown_lock mutex before using dev->online_queues. Give up if nvme_dev_disable() is running or if it has been executed already.

Impact & exploitability

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/26bc0a81f64ce00fc4342c38eeb2eddaad084dd2 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/26bc0a81f64ce00fc4342c38eeb2eddaad084dd2Patch
• https://git.kernel.org/stable/c/4ed32cc0939b64e3d7b48c8c0d63ea038775f304Patch
• https://git.kernel.org/stable/c/b33e49a5f254474b33ce98fd45dd0ffdc247a0bePatch
• https://git.kernel.org/stable/c/0beb55fc6086c86eb07954c914e728a8cb0cd57e