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NVD / CVE Program· CNA Linux

CVE-2022-49438: Input: sparcspkr - fix refcount leak in bbc_beep_probe

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: 0.27% (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 1124e39fea0e2fdb4202f95b716cb97cc7de7cc7, 2f51db16cb740ff90086189a1ef2581eab665591, 353bc58ac6c782d4dcde9136a91d1f90867938fe.

Low priority for now. Upgrade to Linux Linux 1124e39fea0e2fdb4202f95b716cb97cc7de7cc7, 2f51db16cb740ff90086189a1ef2581eab665591, 353bc58ac6c782d4dcde9136a91d1f90867938fe 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: Input: sparcspkr - fix refcount leak in bbc_beep_probe of_find_node_by_path() calls of_find_node_opts_by_path(), which returns a node pointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 20th percentile
CWE
—

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-2022-49438

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 kernel2.6.26 and later · before 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

    • 2.6.26affected
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before 2f51db16cb740ff90086189a1ef2581eab665591affected · git
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before f13064b0f2c651a3fbb0749932795c6fd21556a8affected · git
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before 353bc58ac6c782d4dcde9136a91d1f90867938feaffected · git
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before bbc2b0ce6042dd3117827f10ea8cb67e0ab786daaffected · git
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before 6e07ccc7d56130f760d23f67a70c45366c07debcaffected · git
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before 418b6a3e12f75638abc5673eb76cb32127d0ab13affected · git
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before 73d6f42d8d86648bec2e73d34fe1648cb6d23e08affected · git
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before 1124e39fea0e2fdb4202f95b716cb97cc7de7cc7affected · git
    • 9c1a5077fdca99356c891af37931e537dea874f5 and later · before c8994b30d71d64d5dcc9bc0edbfdf367171aa96faffected · 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

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-2022-49436Feb 26, 2025 · powerpc/papr_scm: Fix leaking nvdimm_events_map elements
    22Monitor
  • ← EarlierCVE-2022-49437Feb 26, 2025 · powerpc/xive: Fix refcount leak in xive_spapr_init
    22Monitor
  • Later →CVE-2022-49439Feb 26, 2025 · powerpc/fsl_rio: Fix refcount leak in fsl_rio_setup
    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 Linux1124e39fea0e2fdb4202f95b716cb97cc7de7cc7Vendor (CNA)
Linux Linux2f51db16cb740ff90086189a1ef2581eab665591Vendor (CNA)
Linux Linux353bc58ac6c782d4dcde9136a91d1f90867938feVendor (CNA)
Linux Linux418b6a3e12f75638abc5673eb76cb32127d0ab13Vendor (CNA)
Linux Linux6e07ccc7d56130f760d23f67a70c45366c07debcVendor (CNA)
Linux Linux73d6f42d8d86648bec2e73d34fe1648cb6d23e08Vendor (CNA)
Linux Linuxbbc2b0ce6042dd3117827f10ea8cb67e0ab786daVendor (CNA)
Linux Linuxc8994b30d71d64d5dcc9bc0edbfdf367171aa96fVendor (CNA)
Linux Linuxf13064b0f2c651a3fbb0749932795c6fd21556a8Vendor (CNA)
debian:linux5.18.5-1 · 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
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)

—

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