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NVD / CVE Program· CNA Linux

CVE-2022-50347: mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host()

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 1491667d5450778a265eddddd294219acfd648cb, 7fa922c7a3dd623fd59f1af50e8896fd9ca7f654, 89303ddbb502c3bc8edbf864f9f85500c8fe07e9.

Low priority for now. Upgrade to Linux Linux 1491667d5450778a265eddddd294219acfd648cb, 7fa922c7a3dd623fd59f1af50e8896fd9ca7f654, 89303ddbb502c3bc8edbf864f9f85500c8fe07e9 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: mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and calling mmc_free_host() in the error path, besides, led_classdev_unregister() and pm_runtime_disable() also need be called.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 16, 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.

Follow CVE-2022-50347

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 4.9.337
  • 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

    • 3.16affected
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before d7ad7278be401b09c9f9a9f522cf4c449c7fd489affected · git
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before e598c9683fe1cf97c2b11b800cc3cee072108220affected · git
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before 89303ddbb502c3bc8edbf864f9f85500c8fe07e9affected · git
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before 937112e991ed25d1727d878734adcbef3b900274affected · git
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before 7fa922c7a3dd623fd59f1af50e8896fd9ca7f654affected · git
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before df683201c7ffbd21a806a7cad657b661c5ebfb6faffected · git
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before 1491667d5450778a265eddddd294219acfd648cbaffected · git
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before a522e26a20a43dcfbef9ee9f71ed803290e852b0affected · git
    • c7f6558d84afe60016b8103c0737df6e376a1c2d and later · before fc38a5a10e9e5a75eb9189854abeb8405b214cc9affected · 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
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.293.14.12.14-122.293.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_77before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.293.14.12.14-122.293.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.293.14.12.14-122.293.1

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-2022-50344Sep 16, 2025 · ext4: fix null-ptr-deref in ext4_write_info
    22Monitor
  • ← EarlierCVE-2022-50346Sep 16, 2025 · ext4: init quota for 'old.inode' in 'ext4_rename'
    22Monitor
  • Later →CVE-2022-50348Sep 16, 2025 · nfsd: Fix a memory leak in an error handling path
    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 Linux1491667d5450778a265eddddd294219acfd648cbVendor (CNA)
Linux Linux7fa922c7a3dd623fd59f1af50e8896fd9ca7f654Vendor (CNA)
Linux Linux89303ddbb502c3bc8edbf864f9f85500c8fe07e9Vendor (CNA)
Linux Linux937112e991ed25d1727d878734adcbef3b900274Vendor (CNA)
Linux Linuxa522e26a20a43dcfbef9ee9f71ed803290e852b0Vendor (CNA)
Linux Linuxd7ad7278be401b09c9f9a9f522cf4c449c7fd489Vendor (CNA)
Linux Linuxdf683201c7ffbd21a806a7cad657b661c5ebfb6fVendor (CNA)
Linux Linuxe598c9683fe1cf97c2b11b800cc3cee072108220Vendor (CNA)
Linux Linuxfc38a5a10e9e5a75eb9189854abeb8405b214cc9Vendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)
suse:kernel-default4.12.14-122.293.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)
suse:kernel-source4.12.14-122.293.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kernel-syms4.12.14-122.293.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_771-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package 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).

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