CVE-2022-49492

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Source
https://cve.org/CVERecord?id=CVE-2022-49492
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49492.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49492
Downstream
Related
Published
2025-02-26T02:13:28.820Z
Modified
2026-03-12T03:25:16.241181Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
Details

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

nvme-pci: fix a NULL pointer dereference in nvmeallocadmin_tags

In nvmeallocadmintags, the adminq can be set to an error (typically -ENOMEM) if the blkmqinitqueue 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 nvmeresetwork the error takes us to nvmeremovedeadctrl() nvmedevdisable() nvmesuspendqueue(&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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49492.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
35b489d32fcc37e8735f41aa794b24cf9d1e74f5
Fixed
8321b17789f614414206af07e17ce4751c95dc76
Fixed
9e649471b396fa0139d53919354ce1eace9b9a24
Fixed
8da2b7bdb47e94bbc4062a3978c708926bcb022c
Fixed
f76729662650cd7bc8f8194e057af381370349a7
Fixed
af98940dd33c9f9e1beb4f71c0a39260100e2a65
Fixed
906c81dba8ee8057523859b5e1a2479e9fd34860
Fixed
7a28556082d1fbcbc599baf1c24252dfc73efefc
Fixed
54a4c1e47d1b2585e74920399455bd9abbfb2bd7
Fixed
da42761181627e9bdc37d18368b827948a583929

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49492.json"