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NVD / CVE Program· CNA Linux

CVE-2022-50538: vme: Fix error not catched in fake_init()

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 09be0e7ac5f9374b6f8de72c89ed67129af71f65, 37d3de40c1ffb6a5e626bf46ff5ef5766c824e2c, 4bc217b25ea81034fad8e33fd33e4659f086421d.

Low priority for now. Upgrade to Linux Linux 09be0e7ac5f9374b6f8de72c89ed67129af71f65, 37d3de40c1ffb6a5e626bf46ff5ef5766c824e2c, 4bc217b25ea81034fad8e33fd33e4659f086421d 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: vme: Fix error not catched in fake_init() In fake_init(), __root_device_register() is possible to fail but it's ignored, which can cause unregistering vme_root fail when exit. general protection fault, probably for non-canonical address 0xdffffc000000008c KASAN: null-ptr-deref in range [0x0000000000000460-0x0000000000000467] RIP: 0010:root_device_unregister+0x26/0x60 Call Trace: <TASK> __x64_sys_delete_module+0x34f/0x540 do_syscall_64+0x38/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd Return error when __root_device_register() fails.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 7, 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%

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 kernel4.9 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 5.15.86
  • linux linux kernel5.16 and later · before 6.0.16
  • linux linux kernel6.1 and later · before 6.1.2

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

    • 4.9affected
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before e831fdd60e5863ee03173baf5a0f7c5450b44381affected · git
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before 69b43937f14bdc3594f57f1a507a14f3d1187136affected · git
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before 09be0e7ac5f9374b6f8de72c89ed67129af71f65affected · git
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before f3f65c4177846c483bf009f8c512ab04b3c62466affected · git
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before 37d3de40c1ffb6a5e626bf46ff5ef5766c824e2caffected · git
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before 4bc217b25ea81034fad8e33fd33e4659f086421daffected · git
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before a2a93546d414c7fe4862b87183fb737d1300d9d2affected · git
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before 60ff9bd4ffc87bace581e235a6728f5ac8e5071faffected · git
    • 658bcdae9c6755806e66b33e29d56b33a3ff421a and later · before 7bef797d707f1744f71156b21d41e3b8c946631faffected · 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-2022-50534Oct 7, 2025 · dm thin: Use last transaction's pmd->root when commit failed
    22Monitor
  • ← EarlierCVE-2022-50536Oct 7, 2025 · bpf, sockmap: Fix repeated calls to sock_put() when msg has more_data
    31Monitor
  • Later →CVE-2022-50539Oct 7, 2025 · ARM: OMAP2+: omap4-common: Fix refcount leak bug
    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 Linux09be0e7ac5f9374b6f8de72c89ed67129af71f65Vendor (CNA)
Linux Linux37d3de40c1ffb6a5e626bf46ff5ef5766c824e2cVendor (CNA)
Linux Linux4bc217b25ea81034fad8e33fd33e4659f086421dVendor (CNA)
Linux Linux60ff9bd4ffc87bace581e235a6728f5ac8e5071fVendor (CNA)
Linux Linux69b43937f14bdc3594f57f1a507a14f3d1187136Vendor (CNA)
Linux Linux7bef797d707f1744f71156b21d41e3b8c946631fVendor (CNA)
Linux Linuxa2a93546d414c7fe4862b87183fb737d1300d9d2Vendor (CNA)
Linux Linuxe831fdd60e5863ee03173baf5a0f7c5450b44381Vendor (CNA)
Linux Linuxf3f65c4177846c483bf009f8c512ab04b3c62466Vendor (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