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NVD / CVE Program· CNA Linux

CVE-2022-50875: of: overlay: fix null pointer dereferencing in find_dup_cset_node_entry() and find_dup_cset_prop()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 2b4af99b44861646013821019dd13a4ac48c0219, 71d88c7453ec3d2ceff98e18ce4d6354abd3b5b6, 9ec5781879b4535ad59b5354b385825378e45618.

Low priority for now. Upgrade to Linux Linux 2b4af99b44861646013821019dd13a4ac48c0219, 71d88c7453ec3d2ceff98e18ce4d6354abd3b5b6, 9ec5781879b4535ad59b5354b385825378e45618 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: of: overlay: fix null pointer dereferencing in find_dup_cset_node_entry() and find_dup_cset_prop() When kmalloc() fail to allocate memory in kasprintf(), fn_1 or fn_2 will be NULL, and strcmp() will cause null pointer dereference.

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
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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  • when exploit code appears or is weaponized
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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.

—

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

    • 5.0affected
    • 2fe0e8769df9fed5098daea7db933bc414c329d7 and later · before 9ec5781879b4535ad59b5354b385825378e45618affected · git
    • 2fe0e8769df9fed5098daea7db933bc414c329d7 and later · before 2b4af99b44861646013821019dd13a4ac48c0219affected · git
    • 2fe0e8769df9fed5098daea7db933bc414c329d7 and later · before ce1b3a41e7964cb8dd56a702a95dd90ad27f51cdaffected · git
    • 2fe0e8769df9fed5098daea7db933bc414c329d7 and later · before ab5bb7bbacf531de8e32912cc2e21f906113cee8affected · git
    • 2fe0e8769df9fed5098daea7db933bc414c329d7 and later · before 71d88c7453ec3d2ceff98e18ce4d6354abd3b5b6affected · git
    • 2fe0e8769df9fed5098daea7db933bc414c329d7 and later · before ee9d7a0e754568180a2f8ebc4aad226278a9116faffected · git
    • before 5.0not affected · semver
    • 5.4.229 and later · up to and including 5.4.*not affected · semver
    • 5.10.163 and later · up to and including 5.10.*not affected · semver

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-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-50873Dec 30, 2025 · vdpa/vp_vdpa: fix kfree a wrong pointer in vp_vdpa_remove
    0Monitor
  • ← EarlierCVE-2022-50874Dec 30, 2025 · RDMA/erdma: Fix refcount leak in erdma_mmap
    0Monitor
  • Later →CVE-2022-50876Dec 30, 2025 · usb: musb: Fix musb_gadget.c rxstate overflow bug
    0Monitor

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 Linux2b4af99b44861646013821019dd13a4ac48c0219Vendor (CNA)
Linux Linux71d88c7453ec3d2ceff98e18ce4d6354abd3b5b6Vendor (CNA)
Linux Linux9ec5781879b4535ad59b5354b385825378e45618Vendor (CNA)
Linux Linuxab5bb7bbacf531de8e32912cc2e21f906113cee8Vendor (CNA)
Linux Linuxce1b3a41e7964cb8dd56a702a95dd90ad27f51cdVendor (CNA)
Linux Linuxee9d7a0e754568180a2f8ebc4aad226278a9116fVendor (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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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 (5 more)

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

All records