CVE-2022-50312

Service interruption via leaked probe allocation

Published Sep 15, 2025 · Updated Sep 15, 2025

Memory leak in the Linux JSM serial driver allows local users to interrupt service through repeated failed Digi adapter probes. The default branch in jsm_probe_one returns ENXIO after allocating the board structure instead of transferring control to out_kfree_brd for release. Exploitation requires local access and relevant Digi serial-adapter hardware; repeated probe failures consume kernel memory and can hang or crash the system.

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

What happened

Memory leak in the Linux JSM serial driver allows local users to interrupt service through repeated failed Digi adapter probes. The default branch in jsm_probe_one returns ENXIO after allocating the board structure instead of transferring control to out_kfree_brd for release. Exploitation requires local access and relevant Digi serial-adapter hardware; repeated probe failures consume kernel memory and can hang or crash the system.

The record

CVE
CVE-2022-50312
Published
Sep 15, 2025
Updated
Sep 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <1d5859ef229e381f4db38dce8ed58e4bf862006b
  2. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <3bf05c2650cf6b8d83bf0b0d808cc78c6ee7e84c
  3. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <3ea1fd63fdf0e83b491c2a9f25b395aa0e4bf6e8
  4. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <6066bd69ffba3a6abc7c0793ccba1da79b7d77e3
  5. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <6be8e565a4a60530797a974d0a3d0e30656166a1
  6. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <71ffe5111f0ffa2fd43c14fd176c6f05d4e82212
  7. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <737594536dc3ce732976c0d84bb1dcc842065521
  8. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <744c2d33a88b082d9d504520f0132b3d688547b2
  9. Affected versionversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <ff9a5e50fb1910be33e62925bc7ee3bef474879e
  10. Affected versionversion=3.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <1d5859ef229e381f4db38dce8ed58e4bf862006b; version=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <3bf05c2650cf6b8d83bf0b0d808cc78c6ee7e84c; version=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <3ea1fd63fdf0e83b491c2a9f25b395aa0e4bf6e8; version=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <6066bd69ffba3a6abc7c0793ccba1da79b7d77e3; version=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <6be8e565a4a60530797a974d0a3d0e30656166a1; version=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <71ffe5111f0ffa2fd43c14fd176c6f05d4e82212; version=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <737594536dc3ce732976c0d84bb1dcc842065521; version=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <744c2d33a88b082d9d504520f0132b3d688547b2; version=03a8482c17dd0ae3251451d54cbbc03f930f21d5 <ff9a5e50fb1910be33e62925bc7ee3bef474879e; version=3.19

Published CVSS scores

5.5NIST NVDCVSS: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.

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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

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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

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Your stack

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