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NVD / CVE Program· CNA Linux

CVE-2022-49492: nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.29% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 54a4c1e47d1b2585e74920399455bd9abbfb2bd7, 7a28556082d1fbcbc599baf1c24252dfc73efefc, 8321b17789f614414206af07e17ce4751c95dc76.

Low priority for now. Upgrade to Linux Linux 54a4c1e47d1b2585e74920399455bd9abbfb2bd7, 7a28556082d1fbcbc599baf1c24252dfc73efefc, 8321b17789f614414206af07e17ce4751c95dc76 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 21th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 4.9.318
  • linux linux kernel4.10 and later · before 4.14.283
  • linux linux kernel4.15 and later · before 4.19.247
  • linux linux kernel4.20 and later · before 5.4.198
  • linux linux kernel5.5 and later · before 5.10.121
  • linux linux kernel5.11 and later · before 5.15.46
  • linux linux kernel5.16 and later · before 5.17.14
  • linux linux kernel5.18 and later · before 5.18.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.19affected
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before 8321b17789f614414206af07e17ce4751c95dc76affected · git
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before 9e649471b396fa0139d53919354ce1eace9b9a24affected · git
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before 8da2b7bdb47e94bbc4062a3978c708926bcb022caffected · git
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before f76729662650cd7bc8f8194e057af381370349a7affected · git
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before af98940dd33c9f9e1beb4f71c0a39260100e2a65affected · git
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before 906c81dba8ee8057523859b5e1a2479e9fd34860affected · git
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before 7a28556082d1fbcbc599baf1c24252dfc73efefcaffected · git
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before 54a4c1e47d1b2585e74920399455bd9abbfb2bd7affected · git
    • 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 and later · before da42761181627e9bdc37d18368b827948a583929affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.18.5-15.18.5-1
Red Hat:enterprise_linux:8::baseosbpftoolbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseosbpftool-debuginfobefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernelbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-abi-stablelistsbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-corebefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debugbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-corebefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-debuginfobefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-develbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-modulesbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debug-modules-extrabefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfobefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-aarch64before 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-ppc64lebefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-s390xbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-debuginfo-common-x86_64before 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-develbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-docbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-modulesbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-modules-extrabefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-toolsbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-tools-debuginfobefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9
Red Hat:enterprise_linux:8::baseoskernel-tools-libsbefore 0:4.18.0-513.5.1.el8_90:4.18.0-513.5.1.el8_9

+23

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-49490Feb 26, 2025 · drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is detected
    22Monitor
  • ← EarlierCVE-2022-49491Feb 26, 2025 · drm/rockchip: vop: fix possible null-ptr-deref in vop_bind()
    22Monitor
  • Later →CVE-2022-49493Feb 26, 2025 · ASoC: rt5645: Fix errorenous cleanup order
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux54a4c1e47d1b2585e74920399455bd9abbfb2bd7Vendor (CNA)
Linux Linux7a28556082d1fbcbc599baf1c24252dfc73efefcVendor (CNA)
Linux Linux8321b17789f614414206af07e17ce4751c95dc76Vendor (CNA)
Linux Linux8da2b7bdb47e94bbc4062a3978c708926bcb022cVendor (CNA)
Linux Linux906c81dba8ee8057523859b5e1a2479e9fd34860Vendor (CNA)
Linux Linux9e649471b396fa0139d53919354ce1eace9b9a24Vendor (CNA)
Linux Linuxaf98940dd33c9f9e1beb4f71c0a39260100e2a65Vendor (CNA)
Linux Linuxda42761181627e9bdc37d18368b827948a583929Vendor (CNA)
Linux Linuxf76729662650cd7bc8f8194e057af381370349a7Vendor (CNA)
debian:linux5.18.5-1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-devel0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-modules0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-modules-extra0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debuginfo0:4.18.0-513.5.1.el8_9 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
suse:kernel-64kb5.3.18-150300.59.218.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-default5.3.18-150300.59.218.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-default-base5.3.18-150300.59.218.1.150300.18.130.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-docs5.3.18-150300.59.218.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP3_Update_611-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-obs-build5.3.18-150300.59.218.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-preempt5.3.18-150300.59.218.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-rt5.3.18-150300.220.1 · SUSE:Linux Enterprise Micro 5.1Package registry (OSV)

+4

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records