CVE-2022-50030

Kernel crash via unterminated lpfc debugfs input

Published Jun 18, 2025 · Updated May 11, 2026

Out-of-bounds writes in Linux kernel lpfc debugfs handlers allow local users with CAP_SYS_ADMIN to crash the kernel through malformed input. Five handlers in drivers/scsi/lpfc/lpfc_debugfs.c accepted a full 64-byte input into 64-byte local buffers, leaving no terminating NUL byte for subsequent string processing. Exploitation requires CAP_SYS_ADMIN in the initial user namespace and access to writable lpfc debugfs controls; the documented consequence is a kernel crash.

CVSS severity7.8
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds writes in Linux kernel lpfc debugfs handlers allow local users with CAP_SYS_ADMIN to crash the kernel through malformed input. Five handlers in drivers/scsi/lpfc/lpfc_debugfs.c accepted a full 64-byte input into 64-byte local buffers, leaving no terminating NUL byte for subsequent string processing. Exploitation requires CAP_SYS_ADMIN in the initial user namespace and access to writable lpfc debugfs controls; the documented consequence is a kernel crash.

The record

CVE
CVE-2022-50030
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record 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=4.11
  2. Affected versionversion=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <2d544e9d19c109dfe34b3dc1253a8b2971abe060
  3. Affected versionversion=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <927907f1cbb3408cadde637fccfc17bb6b10a87d
  4. Affected versionversion=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <b92506dc51f81741eb26609175ac206c20f06e0a
  5. Affected versionversion=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <c29a4baaad38a332c0ae480cf6d6c5bf75ac1828
  6. Affected versionversion=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <f8191d40aa612981ce897e66cda6a88db8df17bb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.11; version=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <2d544e9d19c109dfe34b3dc1253a8b2971abe060; version=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <927907f1cbb3408cadde637fccfc17bb6b10a87d; version=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <b92506dc51f81741eb26609175ac206c20f06e0a; version=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <c29a4baaad38a332c0ae480cf6d6c5bf75ac1828; version=bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 <f8191d40aa612981ce897e66cda6a88db8df17bb

Published CVSS scores

7.8CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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