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NVD / CVE Program· CNA Linux

CVE-2022-50859: cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message

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 60480291c1fcafad8425d93f771b5bcc2bd398b4, 9312e04b6c6bc46354ecd0cc82052a2b3df0b529, 943eb0ede74ecd609fdfd3f0b83e0d237613e526.

Low priority for now. Upgrade to Linux Linux 60480291c1fcafad8425d93f771b5bcc2bd398b4, 9312e04b6c6bc46354ecd0cc82052a2b3df0b529, 943eb0ede74ecd609fdfd3f0b83e0d237613e526 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: cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message Commit d5c7076b772a ("smb3: add smb3.1.1 to default dialect list") extend the dialects from 3 to 4, but forget to decrease the extended length when specific the dialect, then the message length is larger than expected. This maybe leak some info through network because not initialize the message body. After apply this patch, the VALIDATE_NEGOTIATE_INFO message length is reduced from 28 bytes to 26 bytes.

—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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Noroxi analysis

What does it mean in your environment?

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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
    • d5c7076b772ad7dcdb92303397b36aee8fa0d25d and later · before d0050ec3ebbcb3451df9a65b8460be9b9e02e80caffected · git
    • d5c7076b772ad7dcdb92303397b36aee8fa0d25d and later · before 9312e04b6c6bc46354ecd0cc82052a2b3df0b529affected · git
    • d5c7076b772ad7dcdb92303397b36aee8fa0d25d and later · before 60480291c1fcafad8425d93f771b5bcc2bd398b4affected · git
    • d5c7076b772ad7dcdb92303397b36aee8fa0d25d and later · before 943eb0ede74ecd609fdfd3f0b83e0d237613e526affected · git
    • d5c7076b772ad7dcdb92303397b36aee8fa0d25d and later · before fada9b8c95c77bb46b89e18117405bc90fce9f74affected · git
    • d5c7076b772ad7dcdb92303397b36aee8fa0d25d and later · before e98ecc6e94f4e6d21c06660b0f336df02836694faffected · git
    • before 5.0not affected · semver
    • 5.4.220 and later · up to and including 5.4.*not affected · semver
    • 5.10.150 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 6.0.3-16.0.3-1

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-2022-50857Dec 30, 2025 · rapidio: rio: fix possible name leak in rio_register_mport()
    0Monitor
  • ← EarlierCVE-2022-50858Dec 30, 2025 · mmc: alcor: fix return value check of mmc_add_host()
    0Monitor
  • Later →CVE-2022-50860Dec 30, 2025 · apparmor: Fix memleak in alloc_ns()
    31Monitor

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 Linux60480291c1fcafad8425d93f771b5bcc2bd398b4Vendor (CNA)
Linux Linux9312e04b6c6bc46354ecd0cc82052a2b3df0b529Vendor (CNA)
Linux Linux943eb0ede74ecd609fdfd3f0b83e0d237613e526Vendor (CNA)
Linux Linuxd0050ec3ebbcb3451df9a65b8460be9b9e02e80cVendor (CNA)
Linux Linuxe98ecc6e94f4e6d21c06660b0f336df02836694fVendor (CNA)
Linux Linuxfada9b8c95c77bb46b89e18117405bc90fce9f74Vendor (CNA)
debian:linux6.0.3-1 · 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✗ → ✓

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References

Show all references (5 more)

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

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