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CVE-2022-49020· NVD / CVE Program· CNA Linux

net/9p: Fix a potential socket leak in p9_socket_open

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.23% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 0396227f4daf4792a6a8aaa3b7771dc25c4cd443, 2d24d91b9f44620824fc37b766f7cae00ca32748, 8782b32ef867de7981bbe9e86ecb90e92e8780bd.

Low priority for now. Upgrade to Linux Linux 0396227f4daf4792a6a8aaa3b7771dc25c4cd443, 2d24d91b9f44620824fc37b766f7cae00ca32748, 8782b32ef867de7981bbe9e86ecb90e92e8780bd 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: net/9p: Fix a potential socket leak in p9_socket_open Both p9_fd_create_tcp() and p9_fd_create_unix() will call p9_socket_open(). If the creation of p9_trans_fd fails, p9_fd_create_tcp() and p9_fd_create_unix() will return an error directly instead of releasing the cscoket, which will result in a socket leak. This patch adds sock_release() to fix the leak issue.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 21, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 13th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2022-49020

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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel2.6.33 and later · before 4.9.335
  • linux linux kernel4.10 and later · before 4.14.301
  • linux linux kernel4.15 and later · before 4.19.268
  • linux linux kernel4.20 and later · before 5.4.226
  • linux linux kernel5.5 and later · before 5.10.158
  • linux linux kernel5.11 and later · before 5.15.82
  • linux linux kernel5.16 and later · before 6.0.12
  • linux linux kernel6.1

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

    • 2.6.33affected
    • 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and later · before 0396227f4daf4792a6a8aaa3b7771dc25c4cd443affected · git
    • 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and later · before ded893965b895b2dccd3d1436d8d3daffa23ea64affected · git
    • 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and later · before 8b14bd0b500aec1458b51cb621c8e5fab3304260affected · git
    • 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and later · before 2d24d91b9f44620824fc37b766f7cae00ca32748affected · git
    • 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and later · before e01c1542379fb395e7da53706df598f38905dfbfaffected · git
    • 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and later · before 8782b32ef867de7981bbe9e86ecb90e92e8780bdaffected · git
    • 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and later · before aa08323fe18cb7cf95317ffa2d54ca1de8e74ebdaffected · git
    • 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and later · before dcc14cfd7debe11b825cb077e75d91d2575b4cb8affected · git
    • before 2.6.33not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.12-16.0.12-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-49018Oct 21, 2024 · mptcp: fix sleep in atomic at close time
    22Monitor
  • ← EarlierCVE-2022-49019Oct 21, 2024 · net: ethernet: nixge: fix NULL dereference
    22Monitor
  • Later →CVE-2022-49021Oct 21, 2024 · net: phy: fix null-ptr-deref while probe() failed
    22Monitor

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 Linux0396227f4daf4792a6a8aaa3b7771dc25c4cd443Vendor (CNA)
Linux Linux2d24d91b9f44620824fc37b766f7cae00ca32748Vendor (CNA)
Linux Linux8782b32ef867de7981bbe9e86ecb90e92e8780bdVendor (CNA)
Linux Linux8b14bd0b500aec1458b51cb621c8e5fab3304260Vendor (CNA)
Linux Linuxaa08323fe18cb7cf95317ffa2d54ca1de8e74ebdVendor (CNA)
Linux Linuxdcc14cfd7debe11b825cb077e75d91d2575b4cb8Vendor (CNA)
Linux Linuxded893965b895b2dccd3d1436d8d3daffa23ea64Vendor (CNA)
Linux Linuxe01c1542379fb395e7da53706df598f38905dfbfVendor (CNA)
debian:linux6.0.12-1 · 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

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

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 (7 more)

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

All records