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NVD / CVE Program· CNA Linux

CVE-2021-47206: usb: host: ohci-tmio: check return value after calling platform_get_resource()

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: 0.22% (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 065334f6640d074a1caec2f8b0091467a22f9483, 2474eb7fc3bfbce10f7b8ea431fcffe5dd5f5100, 28e016e02118917e50a667bc72fb80098cf2b460.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 065334f6640d074a1caec2f8b0091467a22f9483, 2474eb7fc3bfbce10f7b8ea431fcffe5dd5f5100, 28e016e02118917e50a667bc72fb80098cf2b460 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: usb: host: ohci-tmio: check return value after calling platform_get_resource() It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Apr 10, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 13th 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.

Follow CVE-2021-47206

When you'll hear from us

  • when it enters CISA KEV
  • 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 4.4.293
  • linux linux kernel4.5 and later · before 4.9.291
  • linux linux kernel4.10 and later · before 4.14.256
  • linux linux kernel4.15 and later · before 4.19.218
  • linux linux kernel4.20 and later · before 5.4.162
  • linux linux kernel5.5 and later · before 5.10.82
  • linux linux kernel5.11 and later · before 5.15.5

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

    • 2.6.28affected
    • 78c73414f4f6744e2ea5a07b263a9698aa6f2416 and later · before 28e016e02118917e50a667bc72fb80098cf2b460affected · git
    • 78c73414f4f6744e2ea5a07b263a9698aa6f2416 and later · before 2f18f97a1a787154a372c0738f1576f14b693d91affected · git
    • 78c73414f4f6744e2ea5a07b263a9698aa6f2416 and later · before bb6ed2e05eb6e8619b30fa854f9becd50c11723faffected · git
    • 78c73414f4f6744e2ea5a07b263a9698aa6f2416 and later · before 951b8239fd24678b56c995c5c0456ab12e059d19affected · git
    • 78c73414f4f6744e2ea5a07b263a9698aa6f2416 and later · before f98986b7acb4219f95789095eced93ed69d81d35affected · git
    • 78c73414f4f6744e2ea5a07b263a9698aa6f2416 and later · before 2474eb7fc3bfbce10f7b8ea431fcffe5dd5f5100affected · git
    • 78c73414f4f6744e2ea5a07b263a9698aa6f2416 and later · before 065334f6640d074a1caec2f8b0091467a22f9483affected · git
    • 78c73414f4f6744e2ea5a07b263a9698aa6f2416 and later · before 9eff2b2e59fda25051ab36cd1cb5014661df657baffected · git
    • before 2.6.28not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.15.5-15.15.5-1
SUSE:Linux Enterprise High Availability Extension 12 SP5kernel-defaultbefore 4.12.14-122.219.14.12.14-122.219.1
SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSkernel-default-basebefore 5.3.18-150200.24.191.1.150200.9.97.15.3.18-150200.24.191.1.150200.9.97.1
SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSkernel-docsbefore 5.3.18-150200.24.191.15.3.18-150200.24.191.1
SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSkernel-obs-buildbefore 5.3.18-150200.24.191.15.3.18-150200.24.191.1
SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSkernel-preemptbefore 5.3.18-150200.24.191.15.3.18-150200.24.191.1
SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSkernel-sourcebefore 5.3.18-150200.24.191.15.3.18-150200.24.191.1
SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSSkernel-symsbefore 5.3.18-150200.24.191.15.3.18-150200.24.191.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-64kbbefore 5.3.18-150300.59.161.15.3.18-150300.59.161.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-default-basebefore 5.3.18-150300.59.161.1.150300.18.94.15.3.18-150300.59.161.1.150300.18.94.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-docsbefore 5.3.18-150300.59.161.25.3.18-150300.59.161.2
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-obs-buildbefore 5.3.18-150300.59.161.15.3.18-150300.59.161.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-preemptbefore 5.3.18-150300.59.161.15.3.18-150300.59.161.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-sourcebefore 5.3.18-150300.59.161.15.3.18-150300.59.161.1
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSkernel-symsbefore 5.3.18-150300.59.161.15.3.18-150300.59.161.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_57before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Live Patching 15 SP2kernel-defaultbefore 5.3.18-150200.24.191.15.3.18-150200.24.191.1
SUSE:Linux Enterprise Live Patching 15 SP2kernel-livepatch-SLE15-SP2_Update_48before 1-150200.5.3.11-150200.5.3.1
SUSE:Linux Enterprise Live Patching 15 SP3kernel-defaultbefore 5.3.18-150300.59.161.15.3.18-150300.59.161.1
SUSE:Linux Enterprise Live Patching 15 SP3kernel-livepatch-SLE15-SP3_Update_44before 1-150300.7.3.11-150300.7.3.1
SUSE:Linux Enterprise Micro 5.1kernel-rtbefore 5.3.18-150300.169.15.3.18-150300.169.1
SUSE:Linux Enterprise Micro 5.1kernel-source-rtbefore 5.3.18-150300.169.15.3.18-150300.169.1
SUSE:Linux Enterprise Real Time 12 SP5kernel-rtbefore 4.12.14-10.188.14.12.14-10.188.1
SUSE:Linux Enterprise Real Time 12 SP5kernel-rt_debugbefore 4.12.14-10.188.14.12.14-10.188.1

+10

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-2021-47204Apr 10, 2024 · net: dpaa2-eth: fix use-after-free in dpaa2_eth_remove
    31Monitor
  • ← EarlierCVE-2021-47205Apr 10, 2024 · clk: sunxi-ng: Unregister clocks/resets when unbinding
    22Monitor
  • Later →CVE-2021-47207Apr 10, 2024 · ALSA: gus: fix null pointer dereference on pointer block
    22Monitor

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 Linux065334f6640d074a1caec2f8b0091467a22f9483Vendor (CNA)
Linux Linux2474eb7fc3bfbce10f7b8ea431fcffe5dd5f5100Vendor (CNA)
Linux Linux28e016e02118917e50a667bc72fb80098cf2b460Vendor (CNA)
Linux Linux2f18f97a1a787154a372c0738f1576f14b693d91Vendor (CNA)
Linux Linux951b8239fd24678b56c995c5c0456ab12e059d19Vendor (CNA)
Linux Linux9eff2b2e59fda25051ab36cd1cb5014661df657bVendor (CNA)
Linux Linuxbb6ed2e05eb6e8619b30fa854f9becd50c11723fVendor (CNA)
Linux Linuxf98986b7acb4219f95789095eced93ed69d81d35Vendor (CNA)
debian:linux5.15.5-1 · Debian:12Package registry (OSV)
suse:kernel-64kb5.3.18-150300.59.161.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-default5.3.18-150300.59.161.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-default-base5.3.18-150300.59.161.1.150300.18.94.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-docs5.3.18-150300.59.161.2 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP3_Update_441-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-obs-build5.3.18-150300.59.161.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-preempt5.3.18-150300.59.161.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-rt5.3.18-150300.169.1 · SUSE:Linux Enterprise Micro 5.1Package registry (OSV)
suse:kernel-source5.3.18-150300.59.161.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-source-rt5.3.18-150300.169.1 · SUSE:Linux Enterprise Micro 5.1Package registry (OSV)
suse:kernel-syms5.3.18-150300.59.161.1 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-zfcpdump5.3.18-150300.59.161.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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 (7 more)

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

All records