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NVD / CVE Program· CNA Linux

CVE-2022-50761: x86/xen: Fix memory leak in xen_init_lock_cpu()

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: 0.30% (FIRST EPSS).
  • Fixed version: Linux Linux 07764d00c869a3390bd4f80412cc8b0e669e6c58, 29198f667f4486f9e227e11faf1411fcf4c82a66, 53ff99c76be611acea37d33133c9136969914865.

Low priority for now. Upgrade to Linux Linux 07764d00c869a3390bd4f80412cc8b0e669e6c58, 29198f667f4486f9e227e11faf1411fcf4c82a66, 53ff99c76be611acea37d33133c9136969914865 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: x86/xen: Fix memory leak in xen_init_lock_cpu() In xen_init_lock_cpu(), the @name has allocated new string by kasprintf(), if bind_ipi_to_irqhandler() fails, it should be freed, otherwise may lead to a memory leak issue, fix it.

—No exploit Fix available
Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 22th 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 · 0.3%

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

    • 2.6.27affected
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before 9278bdbb566656b3704704f8dd6cbc24a6fcc569affected · git
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before 07764d00c869a3390bd4f80412cc8b0e669e6c58affected · git
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before 53ff99c76be611acea37d33133c9136969914865affected · git
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before 29198f667f4486f9e227e11faf1411fcf4c82a66affected · git
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before 70e7f308d7a8e915c7fbc0f1d959968eab8000cdaffected · git
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before 70966d6b0f59f795b08a70adf5e4478348ecbfbbaffected · git
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before 798fc3cf98ca07e448956f39295c5d686ab4b054affected · git
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before b44457b83a034efef58ffa5f3131d4615f1a9837affected · git
    • 2d9e1e2f58b5612aa4eab0ab54c84308a29dbd79 and later · before ca84ce153d887b1dc8b118029976cc9faf2a9b40affected · 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-2022-50759Dec 24, 2025 · media: i2c: ov5648: Free V4L2 fwnode data on unbind
    0Monitor
  • ← EarlierCVE-2022-50760Dec 24, 2025 · drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios()
    0Monitor
  • Later →CVE-2022-50762Dec 24, 2025 · fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst()
    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 Linux07764d00c869a3390bd4f80412cc8b0e669e6c58Vendor (CNA)
Linux Linux29198f667f4486f9e227e11faf1411fcf4c82a66Vendor (CNA)
Linux Linux53ff99c76be611acea37d33133c9136969914865Vendor (CNA)
Linux Linux70966d6b0f59f795b08a70adf5e4478348ecbfbbVendor (CNA)
Linux Linux70e7f308d7a8e915c7fbc0f1d959968eab8000cdVendor (CNA)
Linux Linux798fc3cf98ca07e448956f39295c5d686ab4b054Vendor (CNA)
Linux Linux9278bdbb566656b3704704f8dd6cbc24a6fcc569Vendor (CNA)
Linux Linuxb44457b83a034efef58ffa5f3131d4615f1a9837Vendor (CNA)
Linux Linuxca84ce153d887b1dc8b118029976cc9faf2a9b40Vendor (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 (8 more)

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

All records