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NVD / CVE Program· CNA Linux

CVE-2022-50886: mmc: toshsd: fix return value check of mmc_add_host()

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: 0.23% (FIRST EPSS).
  • Fixed version: Linux Linux 3329e7b7132ca727263fb0ee214cf52cc6dcaaad, 34ae492f8d172f0bd193c24cad588b35419ea47a, 3dbb69a0242c31ea4c9eee22b1c41b515fe509a0.

Low priority for now. Upgrade to Linux Linux 3329e7b7132ca727263fb0ee214cf52cc6dcaaad, 34ae492f8d172f0bd193c24cad588b35419ea47a, 3dbb69a0242c31ea4c9eee22b1c41b515fe509a0 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: toshsd: 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 goto error path which will call mmc_free_host(), besides, free_irq() also needs be called.

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 14th 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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  • A fix has been released

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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

    • 3.19affected
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before 34ae492f8d172f0bd193c24cad588b35419ea47aaffected · git
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before 3329e7b7132ca727263fb0ee214cf52cc6dcaaadaffected · git
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before 4f6cb1c685f9e20a4a9fa565e442f5af4dad70ffaffected · git
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before 3dbb69a0242c31ea4c9eee22b1c41b515fe509a0affected · git
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before aabbedcb6c9a72d12d35dc672e83f0c8064d8a61affected · git
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before 6444079767b68b1fbed0e7668081146e80dcb719affected · git
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before 647e370dd0ef7e212d8d014bda748e461eab2e8caffected · git
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before bfd77b194c94aefbde4efc30ddf8607dd9244672affected · git
    • a5eb8bbd66ccf9f169419f9652544aec771b7c57 and later · before f670744a316ea983113a65313dcd387b5a992444affected · 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-2026-74705udp: 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-2022-50883Dec 30, 2025 · bpf: Prevent decl_tag from being referenced in func_proto arg
    0Monitor
  • ← EarlierCVE-2022-50884Dec 30, 2025 · drm: Prevent drm_copy_field() to attempt copying a NULL pointer
    0Monitor
  • Later →CVE-2022-50887Dec 30, 2025 · regulator: core: fix unbalanced of node refcount in regulator_dev_lookup()
    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 Linux3329e7b7132ca727263fb0ee214cf52cc6dcaaadVendor (CNA)
Linux Linux34ae492f8d172f0bd193c24cad588b35419ea47aVendor (CNA)
Linux Linux3dbb69a0242c31ea4c9eee22b1c41b515fe509a0Vendor (CNA)
Linux Linux4f6cb1c685f9e20a4a9fa565e442f5af4dad70ffVendor (CNA)
Linux Linux6444079767b68b1fbed0e7668081146e80dcb719Vendor (CNA)
Linux Linux647e370dd0ef7e212d8d014bda748e461eab2e8cVendor (CNA)
Linux Linuxaabbedcb6c9a72d12d35dc672e83f0c8064d8a61Vendor (CNA)
Linux Linuxbfd77b194c94aefbde4efc30ddf8607dd9244672Vendor (CNA)
Linux Linuxf670744a316ea983113a65313dcd387b5a992444Vendor (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✗ → ✓

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References

Show all references (8 more)

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

All records