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NVD / CVE Program· CNA Linux

CVE-2022-50783: mptcp: use proper req destructor for IPv6

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: 0.25% (FIRST EPSS).
  • Fixed version: Linux Linux 092953f3c4cd65f88b27b87a922f6c725f34ee04, 1922ea6b0ae2ea0c9a09be0eafafe1cd1069d259, 6eb02c596ec02e5897ae377e065cb7df55337a96.

Low priority for now. Upgrade to Linux Linux 092953f3c4cd65f88b27b87a922f6c725f34ee04, 1922ea6b0ae2ea0c9a09be0eafafe1cd1069d259, 6eb02c596ec02e5897ae377e065cb7df55337a96 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: mptcp: use proper req destructor for IPv6 Before, only the destructor from TCP request sock in IPv4 was called even if the subflow was IPv6. It is important to use the right destructor to avoid memory leaks with some advanced IPv6 features, e.g. when the request socks contain specific IPv6 options.

—No exploit Fix available
Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 17th 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%

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

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When you'll hear from us

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  • 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.

—

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

    • 5.6affected
    • 79c0949e9a09f6a14a6dd18dc8396029423f9b68 and later · before 6eb02c596ec02e5897ae377e065cb7df55337a96affected · git
    • 79c0949e9a09f6a14a6dd18dc8396029423f9b68 and later · before bd5dc96fea4edd16d2e22f41b4dd50a4cfbeb919affected · git
    • 79c0949e9a09f6a14a6dd18dc8396029423f9b68 and later · before 092953f3c4cd65f88b27b87a922f6c725f34ee04affected · git
    • 79c0949e9a09f6a14a6dd18dc8396029423f9b68 and later · before 1922ea6b0ae2ea0c9a09be0eafafe1cd1069d259affected · git
    • 79c0949e9a09f6a14a6dd18dc8396029423f9b68 and later · before d3295fee3c756ece33ac0d935e172e68c0a4161baffected · git
    • before 5.6not affected · semver
    • 5.10.163 and later · up to and including 5.10.*not affected · semver
    • 5.15.87 and later · up to and including 5.15.*not affected · semver
    • 6.0.18 and later · up to and including 6.0.*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-2022-50781Dec 24, 2025 · amdgpu/pm: prevent array underflow in vega20_odn_edit_dpm_table()
    0Monitor
  • ← EarlierCVE-2022-50782Dec 24, 2025 · ext4: fix bug_on in __es_tree_search caused by bad quota inode
    0Monitor
  • Later →CVE-2023-54044Dec 24, 2025 · spmi: Add a check for remove callback when removing a SPMI driver
    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 Linux092953f3c4cd65f88b27b87a922f6c725f34ee04Vendor (CNA)
Linux Linux1922ea6b0ae2ea0c9a09be0eafafe1cd1069d259Vendor (CNA)
Linux Linux6eb02c596ec02e5897ae377e065cb7df55337a96Vendor (CNA)
Linux Linuxbd5dc96fea4edd16d2e22f41b4dd50a4cfbeb919Vendor (CNA)
Linux Linuxd3295fee3c756ece33ac0d935e172e68c0a4161bVendor (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✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

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

All records