CVE-2022-50114

Service interruption via 9p request reference leak

Published Jun 18, 2025 · Updated Jul 4, 2026

Resource-management error in the Linux kernel allows local users to interrupt service through the 9p transport error path. In net/9p/trans_fd.c, p9_read_work() fails to call p9_req_put() when m->rreq->rc.sdata is NULL, temporarily retaining a request reference. Triggering requires low-privileged local access and the affected 9p path; published evidence establishes availability impact but describes no reproducible crash or hang.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource-management error in the Linux kernel allows local users to interrupt service through the 9p transport error path. In net/9p/trans_fd.c, p9_read_work() fails to call p9_req_put() when m->rreq->rc.sdata is NULL, temporarily retaining a request reference. Triggering requires low-privileged local access and the affected 9p path; published evidence establishes availability impact but describes no reproducible crash or hang.

The record

CVE
CVE-2022-50114
Published
Jun 18, 2025
Updated
Jul 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3665a4d9dca1bd06bc34afb72e637fe01b2776ee
  2. Affected versionversion=4.19.57 <4.20
  3. Affected versionversion=4.20
  4. Affected versionversion=728356dedeff8ef999cb436c71333ef4ac51a81c <34b9a188557c1d5a50e07cf228d054101aee0af3
  5. Affected versionversion=728356dedeff8ef999cb436c71333ef4ac51a81c <4ac7573e1f9333073fa8d303acc941c9b7ab7f61
  6. Affected versionversion=728356dedeff8ef999cb436c71333ef4ac51a81c <622f2a467bdfbce73fd43ea74b5f0fd2caaa8c5d
  7. Affected versionversion=728356dedeff8ef999cb436c71333ef4ac51a81c <8324649b0035cbb30ebc3ca901540cb392e89041
  8. Affected versionversion=728356dedeff8ef999cb436c71333ef4ac51a81c <9bc63a124cc20a69a126e45e3d593d5807bb5258

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3665a4d9dca1bd06bc34afb72e637fe01b2776ee; version=4.19.57 <4.20; version=4.20; version=728356dedeff8ef999cb436c71333ef4ac51a81c <34b9a188557c1d5a50e07cf228d054101aee0af3; version=728356dedeff8ef999cb436c71333ef4ac51a81c <4ac7573e1f9333073fa8d303acc941c9b7ab7f61; version=728356dedeff8ef999cb436c71333ef4ac51a81c <622f2a467bdfbce73fd43ea74b5f0fd2caaa8c5d; version=728356dedeff8ef999cb436c71333ef4ac51a81c <8324649b0035cbb30ebc3ca901540cb392e89041; version=728356dedeff8ef999cb436c71333ef4ac51a81c <9bc63a124cc20a69a126e45e3d593d5807bb5258

Published CVSS scores

5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo