CVE - CVE-2022-49492

CVE-ID
CVE-2022-49492	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7 URL:https://git.kernel.org/stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7 MISC:https://git.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc URL:https://git.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc MISC:https://git.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76 URL:https://git.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76 MISC:https://git.kernel.org/stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022c URL:https://git.kernel.org/stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022c MISC:https://git.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860 URL:https://git.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860 MISC:https://git.kernel.org/stable/c/9e649471b396fa0139d53919354ce1eace9b9a24 URL:https://git.kernel.org/stable/c/9e649471b396fa0139d53919354ce1eace9b9a24 MISC:https://git.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65 URL:https://git.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65 MISC:https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929 URL:https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929 MISC:https://git.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7 URL:https://git.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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