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NVD / CVE Program· CNA Linux

CVE-2022-50821: SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails

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: 0.26% (FIRST EPSS).
  • Fixed version: Linux Linux 2cd6026e257362f030c8be57abaf7fc0049df60a, 67eb848161c2799f2007968ea3bc87adb15c9567, 76f2497a2faa6a4e91efb94a7f55705b403273fd.

Low priority for now. Upgrade to Linux Linux 2cd6026e257362f030c8be57abaf7fc0049df60a, 67eb848161c2799f2007968ea3bc87adb15c9567, 76f2497a2faa6a4e91efb94a7f55705b403273fd 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: SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 18th 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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-50821

When you'll hear from us

  • when it enters CISA KEV
  • 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

    • 3.10affected
    • 030d794bf49855f5e2a9e8dfbfad34211d1eb08b and later · before 76f2497a2faa6a4e91efb94a7f55705b403273fdaffected · git
    • 030d794bf49855f5e2a9e8dfbfad34211d1eb08b and later · before aa91afe597401b78baa7d751c71eedb92c80bd4daffected · git
    • 030d794bf49855f5e2a9e8dfbfad34211d1eb08b and later · before 2cd6026e257362f030c8be57abaf7fc0049df60aaffected · git
    • 030d794bf49855f5e2a9e8dfbfad34211d1eb08b and later · before d01fa993eb7fbc305f0a9c3e8bfac6513efc13b6affected · git
    • 030d794bf49855f5e2a9e8dfbfad34211d1eb08b and later · before 67eb848161c2799f2007968ea3bc87adb15c9567affected · git
    • 030d794bf49855f5e2a9e8dfbfad34211d1eb08b and later · before c9ded831e2552b9c3cab7e2591a190e94f9d29c0affected · git
    • 030d794bf49855f5e2a9e8dfbfad34211d1eb08b and later · before da522b5fe1a5f8b7c20a0023e87b52a150e53bf5affected · git
    • before 3.10not affected · semver
    • 4.19.270 and later · up to and including 4.19.*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-2022-50819Dec 30, 2025 · udmabuf: Set ubuf->sg = NULL if the creation of sg table fails
    0Monitor
  • ← EarlierCVE-2022-50820Dec 30, 2025 · perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()
    0Monitor
  • Later →CVE-2022-50823Dec 30, 2025 · clk: tegra: Fix refcount leak in tegra114_clock_init
    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 Linux2cd6026e257362f030c8be57abaf7fc0049df60aVendor (CNA)
Linux Linux67eb848161c2799f2007968ea3bc87adb15c9567Vendor (CNA)
Linux Linux76f2497a2faa6a4e91efb94a7f55705b403273fdVendor (CNA)
Linux Linuxaa91afe597401b78baa7d751c71eedb92c80bd4dVendor (CNA)
Linux Linuxc9ded831e2552b9c3cab7e2591a190e94f9d29c0Vendor (CNA)
Linux Linuxd01fa993eb7fbc305f0a9c3e8bfac6513efc13b6Vendor (CNA)
Linux Linuxda522b5fe1a5f8b7c20a0023e87b52a150e53bf5Vendor (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 (6 more)

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

All records