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NVD / CVE Program· CNA Linux

CVE-2022-49083: iommu/omap: Fix regression in probe for NULL pointer dereference

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: 0.24% (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 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968, 47e239117bd97c8556f9187af7a9a7938db4e021, 71ff461c3f41f6465434b9e980c01782763e7ad8.

Low priority for now. Upgrade to Linux Linux 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968, 47e239117bd97c8556f9187af7a9a7938db4e021, 71ff461c3f41f6465434b9e980c01782763e7ad8 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 regression in probe for NULL pointer dereference Commit 3f6634d997db ("iommu: Use right way to retrieve iommu_ops") started triggering a NULL pointer dereference for some omap variants: __iommu_probe_device from probe_iommu_group+0x2c/0x38 probe_iommu_group from bus_for_each_dev+0x74/0xbc bus_for_each_dev from bus_iommu_probe+0x34/0x2e8 bus_iommu_probe from bus_set_iommu+0x80/0xc8 bus_set_iommu from omap_iommu_init+0x88/0xcc omap_iommu_init from do_one_initcall+0x44/0x24 This is caused by omap iommu probe returning 0 instead of ERR_PTR(-ENODEV) as noted by Jason Gunthorpe <jgg@ziepe.ca>. Looks like the regression already happened with an earlier commit 6785eb9105e3 ("iommu/omap: Convert to probe/release_device() call-backs") that changed the function return type and missed converting one place.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 15th 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%

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

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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 kernel5.8 and later · before 5.10.111
  • linux linux kernel5.11 and later · before 5.15.34
  • linux linux kernel5.16 and later · before 5.16.20
  • linux linux kernel5.17 and later · before 5.17.3
  • linux linux kernel5.18

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

    • 5.8affected
    • 6785eb9105e3363aa51408c700a55e8b5f88fcf6 and later · before bd905fed87ce01ac010011bb8f44ed0140116cebaffected · git
    • 6785eb9105e3363aa51408c700a55e8b5f88fcf6 and later · before 47e239117bd97c8556f9187af7a9a7938db4e021affected · git
    • 6785eb9105e3363aa51408c700a55e8b5f88fcf6 and later · before ea518578aa8a9a0280605b53cc33f707e10c8178affected · git
    • 6785eb9105e3363aa51408c700a55e8b5f88fcf6 and later · before 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968affected · git
    • 6785eb9105e3363aa51408c700a55e8b5f88fcf6 and later · before 71ff461c3f41f6465434b9e980c01782763e7ad8affected · git
    • before 5.8not affected · semver
    • 5.10.111 and later · up to and including 5.10.*not affected · semver
    • 5.15.34 and later · up to and including 5.15.*not affected · semver
    • 5.16.20 and later · up to and including 5.16.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.17.3-15.17.3-1

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-2022-49081Feb 26, 2025 · highmem: fix checks in __kmap_local_sched_{in,out}
    22Monitor
  • ← EarlierCVE-2022-49082Feb 26, 2025 · scsi: mpt3sas: Fix use after free in _scsih_expander_node_remove()
    31Monitor
  • Later →CVE-2022-49084Feb 26, 2025 · qede: confirm skb is allocated before using
    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 Linux1d89f2b9eadbcf3ce93c6d7238f68299a1f84968Vendor (CNA)
Linux Linux47e239117bd97c8556f9187af7a9a7938db4e021Vendor (CNA)
Linux Linux71ff461c3f41f6465434b9e980c01782763e7ad8Vendor (CNA)
Linux Linuxbd905fed87ce01ac010011bb8f44ed0140116cebVendor (CNA)
Linux Linuxea518578aa8a9a0280605b53cc33f707e10c8178Vendor (CNA)
debian:linux5.17.3-1 · 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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 (4 more)

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

All records