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NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-ipaclones-internal  (opens in a new tab)

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EPSS
0.29% (22nd percentile)

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  • Snyk IDSNYK-RHEL8-KERNELIPACLONESINTERNAL-9230884
  • published5 Mar 2025
  • disclosed26 Feb 2025
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Introduced: 26 Feb 2025

CVE-2022-49492  (opens in a new tab)
CWE-476  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-ipaclones-internal package and not the kernel-ipaclones-internal package as distributed by RHEL.

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.