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NVD / CVE Program· CNA Linux

CVE-2022-50301: iommu/omap: Fix buffer overflow in debugfs

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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: 0.18% (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 0c7043a5b5c3b35f5dc8875757f71e7f491d64d4, 184233a5202786b20220acd2d04ddf909ef18f29, 2fee0dbfaeaaa4bda04279ce772c4572b1429d04.

Low priority for now. Upgrade to Linux Linux 0c7043a5b5c3b35f5dc8875757f71e7f491d64d4, 184233a5202786b20220acd2d04ddf909ef18f29, 2fee0dbfaeaaa4bda04279ce772c4572b1429d04 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: iommu/omap: Fix buffer overflow in debugfs There are two issues here: 1) The "len" variable needs to be checked before the very first write. Otherwise if omap2_iommu_dump_ctx() with "bytes" less than 32 it is a buffer overflow. 2) The snprintf() function returns the number of bytes that *would* have been copied if there were enough space. But we want to know the number of bytes which were *actually* copied so use scnprintf() instead.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 15, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 8th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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

  • 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 kernel3.19 and later · before 4.9.331
  • linux linux kernel4.10 and later · before 4.14.296
  • linux linux kernel4.15 and later · before 4.19.262
  • linux linux kernel4.20 and later · before 5.4.220
  • linux linux kernel5.5 and later · before 5.10.150
  • linux linux kernel5.11 and later · before 5.15.75
  • linux linux kernel5.16 and later · before 5.19.17
  • linux linux kernel6.0 and later · before 6.0.3

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
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before 706e359cf046c142db290244c3f4938b20fbe805affected · git
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before ec53b99b6b9da8b501f001595a6260c03b42d5b7affected · git
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before 648472df221f2bbffb433b964bcb87baccc586d8affected · git
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before 4010a1afaae1c0fb9c2cac5de703bed29b1f1782affected · git
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before 2fee0dbfaeaaa4bda04279ce772c4572b1429d04affected · git
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before 0c7043a5b5c3b35f5dc8875757f71e7f491d64d4affected · git
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before bd0438f534b2e31b12f0b39b355c5dc2bbdaf854affected · git
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before 9814cc350e0765ce69244bf55ae4c8b29facd27eaffected · git
    • bd4396f09a4a9e77423e92ec9448217ab46f6edf and later · before 184233a5202786b20220acd2d04ddf909ef18f29affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.3-16.0.3-1

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-2022-50299Sep 15, 2025 · md: Replace snprintf with scnprintf
    22Monitor
  • ← EarlierCVE-2022-50300Sep 15, 2025 · btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
    31Monitor
  • Later →CVE-2022-50302Sep 15, 2025 · lockd: set other missing fields when unlocking files
    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 Linux0c7043a5b5c3b35f5dc8875757f71e7f491d64d4Vendor (CNA)
Linux Linux184233a5202786b20220acd2d04ddf909ef18f29Vendor (CNA)
Linux Linux2fee0dbfaeaaa4bda04279ce772c4572b1429d04Vendor (CNA)
Linux Linux4010a1afaae1c0fb9c2cac5de703bed29b1f1782Vendor (CNA)
Linux Linux648472df221f2bbffb433b964bcb87baccc586d8Vendor (CNA)
Linux Linux706e359cf046c142db290244c3f4938b20fbe805Vendor (CNA)
Linux Linux9814cc350e0765ce69244bf55ae4c8b29facd27eVendor (CNA)
Linux Linuxbd0438f534b2e31b12f0b39b355c5dc2bbdaf854Vendor (CNA)
Linux Linuxec53b99b6b9da8b501f001595a6260c03b42d5b7Vendor (CNA)
debian:linux6.0.3-1 · Debian:12Package 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).

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

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

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