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CVE-2022-50846· NVD / CVE Program· CNA Linux

mmc: via-sdmmc: 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: 0.28% (FIRST EPSS).
  • Fixed version: Linux Linux 076bcd2c93e16b05c10564e299d6e5d26a766d00, 0959cc1685eb19774300d43ef25e318b457b156b, 0ec94795114edc7e24ec71849dce42bfa61dafa3.

Low priority for now. Upgrade to Linux Linux 076bcd2c93e16b05c10564e299d6e5d26a766d00, 0959cc1685eb19774300d43ef25e318b457b156b, 0ec94795114edc7e24ec71849dce42bfa61dafa3 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: via-sdmmc: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del(). Fix this by checking the return value and goto error path which will call mmc_free_host().

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 19th 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

    • 2.6.31affected
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before 076bcd2c93e16b05c10564e299d6e5d26a766d00affected · git
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before 12b8e81b77c05c658efd9cde3585bbd65ae39b59affected · git
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before 95025a8dd0ec015872f6c16473fe04d6264e68caaffected · git
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before f59ef2a47a228e51322ad76752a55a8917c56e38affected · git
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before 63400da6cd37a9793c19bb6aed7131b58b975a04affected · git
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before 0959cc1685eb19774300d43ef25e318b457b156baffected · git
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before 0ec94795114edc7e24ec71849dce42bfa61dafa3affected · git
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before ba91b413983a9235792523c6b9f7ba2586c4d75daffected · git
    • f0bf7f61b8405224bc52fc9a3ccd167a68126e00 and later · before e4e46fb61e3bb4628170810d3f2b996b709b90d9affected · 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-2022-50844Dec 30, 2025 · drm/amdgpu: Fix type of second parameter in odn_edit_dpm_table() callback
    0Monitor
  • ← EarlierCVE-2022-50845Dec 30, 2025 · ext4: fix inode leak in ext4_xattr_inode_create() on an error path
    0Monitor
  • Later →CVE-2022-50847Dec 30, 2025 · drm/bridge: it6505: Initialize AUX channel in it6505_i2c_probe
    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 Linux076bcd2c93e16b05c10564e299d6e5d26a766d00Vendor (CNA)
Linux Linux0959cc1685eb19774300d43ef25e318b457b156bVendor (CNA)
Linux Linux0ec94795114edc7e24ec71849dce42bfa61dafa3Vendor (CNA)
Linux Linux12b8e81b77c05c658efd9cde3585bbd65ae39b59Vendor (CNA)
Linux Linux63400da6cd37a9793c19bb6aed7131b58b975a04Vendor (CNA)
Linux Linux95025a8dd0ec015872f6c16473fe04d6264e68caVendor (CNA)
Linux Linuxba91b413983a9235792523c6b9f7ba2586c4d75dVendor (CNA)
Linux Linuxe4e46fb61e3bb4628170810d3f2b996b709b90d9Vendor (CNA)
Linux Linuxf59ef2a47a228e51322ad76752a55a8917c56e38Vendor (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.

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

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 (8 more)

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

All records