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NVD / CVE Program· CNA Linux

CVE-2022-50415: parisc: led: Fix potential null-ptr-deref in start_task()

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: 0.16% (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 3505c187b86136250b39e62c72a3a70435277af6, 41f563ab3c33698bdfc3403c7c2e6c94e73681e4, 5e4500454d75dd249be4695d83afa3ba0724c37e.

Low priority for now. Upgrade to Linux Linux 3505c187b86136250b39e62c72a3a70435277af6, 41f563ab3c33698bdfc3403c7c2e6c94e73681e4, 5e4500454d75dd249be4695d83afa3ba0724c37e 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: parisc: led: Fix potential null-ptr-deref in start_task() start_task() calls create_singlethread_workqueue() and not checked the ret value, which may return NULL. And a null-ptr-deref may happen: start_task() create_singlethread_workqueue() # failed, led_wq is NULL queue_delayed_work() queue_delayed_work_on() __queue_delayed_work() # warning here, but continue __queue_work() # access wq->flags, null-ptr-deref Check the ret value and return -ENOMEM if it is NULL.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 18, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 5th 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 · 0.1%

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

  • 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 kernel2.6.15 and later · before 4.9.337
  • linux linux kernel4.10 and later · before 4.14.303
  • linux linux kernel4.15 and later · before 4.19.270
  • linux linux kernel4.20 and later · before 5.4.229
  • linux linux kernel5.5 and later · before 5.10.163
  • linux linux kernel5.11 and later · before 5.15.87
  • linux linux kernel5.16 and later · before 6.0.18
  • linux linux kernel6.1 and later · before 6.1.4

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

    • 2.6.15affected
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before c6db0c32f39684c89c97bc1ba1c9c4249ca09e48affected · git
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before fc6d0f65f22040c6cc8a5ce032bf90252629de50affected · git
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before fc307b2905a3dd75c50a53b4d87ac9c912fb7c4eaffected · git
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before 5e4500454d75dd249be4695d83afa3ba0724c37eaffected · git
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before 3505c187b86136250b39e62c72a3a70435277af6affected · git
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before ac838c663ba1fd6bff35a817fd89a47ab55e88e0affected · git
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before 77f8b628affaec692d83ad8bfa3520db8a0cc493affected · git
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before 67c98fec87ed76b1feb2ae810051afd88dfa9df6affected · git
    • 3499495205a676d85fcc2f3c28e35ec9b43c47e3 and later · before 41f563ab3c33698bdfc3403c7c2e6c94e73681e4affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1

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-2022-50413Sep 18, 2025 · wifi: mac80211: fix use-after-free
    31Monitor
  • ← EarlierCVE-2022-50414Sep 18, 2025 · scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails
    22Monitor
  • Later →CVE-2022-50416Sep 18, 2025 · irqchip/wpcm450: Fix memory leak in wpcm450_aic_of_init()
    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 Linux3505c187b86136250b39e62c72a3a70435277af6Vendor (CNA)
Linux Linux41f563ab3c33698bdfc3403c7c2e6c94e73681e4Vendor (CNA)
Linux Linux5e4500454d75dd249be4695d83afa3ba0724c37eVendor (CNA)
Linux Linux67c98fec87ed76b1feb2ae810051afd88dfa9df6Vendor (CNA)
Linux Linux77f8b628affaec692d83ad8bfa3520db8a0cc493Vendor (CNA)
Linux Linuxac838c663ba1fd6bff35a817fd89a47ab55e88e0Vendor (CNA)
Linux Linuxc6db0c32f39684c89c97bc1ba1c9c4249ca09e48Vendor (CNA)
Linux Linuxfc307b2905a3dd75c50a53b4d87ac9c912fb7c4eVendor (CNA)
Linux Linuxfc6d0f65f22040c6cc8a5ce032bf90252629de50Vendor (CNA)
debian:linux6.1.4-1 · 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)

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