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NVD / CVE Program· CNA Linux

CVE-2022-50858: mmc: alcor: 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: 0.24% (FIRST EPSS).
  • Fixed version: Linux Linux 289c964fe182ce755044a6cd57698072e12ffa6f, 29c5b4da41f35108136d843c7432885c78cf8272, 48dc06333d75f41c2ce9ba954bc3231324b45914.

Low priority for now. Upgrade to Linux Linux 289c964fe182ce755044a6cd57698072e12ffa6f, 29c5b4da41f35108136d843c7432885c78cf8272, 48dc06333d75f41c2ce9ba954bc3231324b45914 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: alcor: 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.

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 15th 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

    • 5.0affected
    • c5413ad815a675b5c98a002353d8e96b44b164e9 and later · before 289c964fe182ce755044a6cd57698072e12ffa6faffected · git
    • c5413ad815a675b5c98a002353d8e96b44b164e9 and later · before 4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2affected · git
    • c5413ad815a675b5c98a002353d8e96b44b164e9 and later · before 29c5b4da41f35108136d843c7432885c78cf8272affected · git
    • c5413ad815a675b5c98a002353d8e96b44b164e9 and later · before 48dc06333d75f41c2ce9ba954bc3231324b45914affected · git
    • c5413ad815a675b5c98a002353d8e96b44b164e9 and later · before 60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2affected · git
    • c5413ad815a675b5c98a002353d8e96b44b164e9 and later · before e93d1468f429475a753d6baa79b853b7ee5ef8c0affected · git
    • before 5.0not affected · semver
    • 5.4.229 and later · up to and including 5.4.*not affected · semver
    • 5.10.163 and later · up to and including 5.10.*not affected · semver

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-2022-50856Dec 30, 2025 · cifs: Fix xid leak in cifs_ses_add_channel()
    0Monitor
  • ← EarlierCVE-2022-50857Dec 30, 2025 · rapidio: rio: fix possible name leak in rio_register_mport()
    0Monitor
  • Later →CVE-2022-50859Dec 30, 2025 · cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message
    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 Linux289c964fe182ce755044a6cd57698072e12ffa6fVendor (CNA)
Linux Linux29c5b4da41f35108136d843c7432885c78cf8272Vendor (CNA)
Linux Linux48dc06333d75f41c2ce9ba954bc3231324b45914Vendor (CNA)
Linux Linux4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2Vendor (CNA)
Linux Linux60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2Vendor (CNA)
Linux Linuxe93d1468f429475a753d6baa79b853b7ee5ef8c0Vendor (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 (5 more)

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

All records