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CVE-2022-48626· NVD / CVE Program· CNA Linux

moxart: fix potential use-after-free on remove path

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: 0.31% (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 3a0a7ec5574b510b067cfc734b8bdb6564b31d4e, 7f901d53f120d1921f84f7b9b118e87e94b403c5, 9c25d5ff1856b91bd4365e813f566cb59aaa9552.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3a0a7ec5574b510b067cfc734b8bdb6564b31d4e, 7f901d53f120d1921f84f7b9b118e87e94b403c5, 9c25d5ff1856b91bd4365e813f566cb59aaa9552 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: moxart: fix potential use-after-free on remove path It was reported that the mmc host structure could be accessed after it was freed in moxart_remove(), so fix this by saving the base register of the device and using it instead of the pointer dereference.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Feb 26, 2024
Updated
Jun 17, 2026
EPSS
0.3% · 22th 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 · 0.3%

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-2022-48626

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 kernel3.16 and later · before 4.9.301
  • linux linux kernel4.10 and later · before 4.14.266
  • linux linux kernel4.15 and later · before 4.19.229
  • linux linux kernel4.20 and later · before 5.4.179
  • linux linux kernel5.5 and later · before 5.10.100
  • linux linux kernel5.11 and later · before 5.15.23
  • linux linux kernel5.16 and later · before 5.16.9

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

    • 3.16affected
    • 1b66e94e6b9995323190f31c51d8e1a6f516627e and later · before f5dc193167591e88797262ec78515a0cbe79ff5faffected · git
    • 1b66e94e6b9995323190f31c51d8e1a6f516627e and later · before e6f580d0b3349646d4ee1ce0057eb273e8fb7e2eaffected · git
    • 1b66e94e6b9995323190f31c51d8e1a6f516627e and later · before 9c25d5ff1856b91bd4365e813f566cb59aaa9552affected · git
    • 1b66e94e6b9995323190f31c51d8e1a6f516627e and later · before 3a0a7ec5574b510b067cfc734b8bdb6564b31d4eaffected · git
    • 1b66e94e6b9995323190f31c51d8e1a6f516627e and later · before be93028d306dac9f5b59ebebd9ec7abcfc69c156affected · git
    • 1b66e94e6b9995323190f31c51d8e1a6f516627e and later · before af0e6c49438b1596e4be8a267d218a0c88a42323affected · git
    • 1b66e94e6b9995323190f31c51d8e1a6f516627e and later · before 7f901d53f120d1921f84f7b9b118e87e94b403c5affected · git
    • 1b66e94e6b9995323190f31c51d8e1a6f516627e and later · before bd2db32e7c3e35bd4d9b8bbff689434a50893546affected · git
    • before 3.16not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.16.10-15.16.10-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • 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
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2021-46904Feb 26, 2024 · net: hso: fix null-ptr-deref during tty device unregistration
    22Monitor
  • ← EarlierCVE-2021-46905Feb 26, 2024 · net: hso: fix NULL-deref on disconnect regression
    22Monitor
  • Later →CVE-2023-52465Feb 26, 2024 · power: supply: Fix null pointer dereference in smb2_probe
    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 Linux3a0a7ec5574b510b067cfc734b8bdb6564b31d4eVendor (CNA)
Linux Linux7f901d53f120d1921f84f7b9b118e87e94b403c5Vendor (CNA)
Linux Linux9c25d5ff1856b91bd4365e813f566cb59aaa9552Vendor (CNA)
Linux Linuxaf0e6c49438b1596e4be8a267d218a0c88a42323Vendor (CNA)
Linux Linuxbd2db32e7c3e35bd4d9b8bbff689434a50893546Vendor (CNA)
Linux Linuxbe93028d306dac9f5b59ebebd9ec7abcfc69c156Vendor (CNA)
Linux Linuxe6f580d0b3349646d4ee1ce0057eb273e8fb7e2eVendor (CNA)
Linux Linuxf5dc193167591e88797262ec78515a0cbe79ff5fVendor (CNA)
debian:linux5.16.10-1 · 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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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-416 · Use After Free

CVSS vector

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

nvd-primary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

c
free(dev->buf);/* ... another thread is still running ... */process(dev->buf);

Fixed

c
lock(&dev->lock);free(dev->buf);dev->buf = NULL;unlock(&dev->lock);

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 (7 more)

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

All records