CVE-2022-49100

Diagnostic ambiguity via duplicate init symbols

Published Feb 26, 2025 · Updated May 11, 2026

Improper function naming in the virtio_console driver in Linux 2.6.24 through 5.17.2 causes ambiguous kernel diagnostics. The driver registers anonymous module_init() and module_exit() functions that emit identical init symbol names instead of unique driver-specific names. The ambiguity appears in System.map, crash, oops, bug, and initcall_debug output and is limited to identifying the responsible initialization or exit function.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper function naming in the virtio_console driver in Linux 2.6.24 through 5.17.2 causes ambiguous kernel diagnostics. The driver registers anonymous module_init() and module_exit() functions that emit identical init symbol names instead of unique driver-specific names. The ambiguity appears in System.map, crash, oops, bug, and initcall_debug output and is limited to identifying the responsible initialization or exit function.

The record

CVE
CVE-2022-49100
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 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=2.6.24
  2. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <0f3d824bd70a1303464d5e93ee3e7afe7832fe89
  3. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <3504b0a177208eda85bf472bbf7c9aa77d2b8343
  4. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <3fd5dee7404ce40c79cba468bb2510115639d975
  5. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <44c2d5fbe7b2bd1f8cb114d608a591a73a5d4ae6
  6. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <71612aee09ecea3475f8751dc841d75a011b1fd0
  7. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <7deaddb704713608e0ae559e27185581b9af71a0
  8. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <93e3d88321d2274fa4e26b006e19cc10fec331c2
  9. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <c69b442125bf009fce26e15aa5616caf8a3673c3
  10. Affected versionversion=31610434bc3523c0b01a10917a1185096a03c4c8 <fefb8a2a941338d871e2d83fbd65fbfa068857bd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.24; version=31610434bc3523c0b01a10917a1185096a03c4c8 <0f3d824bd70a1303464d5e93ee3e7afe7832fe89; version=31610434bc3523c0b01a10917a1185096a03c4c8 <3504b0a177208eda85bf472bbf7c9aa77d2b8343; version=31610434bc3523c0b01a10917a1185096a03c4c8 <3fd5dee7404ce40c79cba468bb2510115639d975; version=31610434bc3523c0b01a10917a1185096a03c4c8 <44c2d5fbe7b2bd1f8cb114d608a591a73a5d4ae6; version=31610434bc3523c0b01a10917a1185096a03c4c8 <71612aee09ecea3475f8751dc841d75a011b1fd0; version=31610434bc3523c0b01a10917a1185096a03c4c8 <7deaddb704713608e0ae559e27185581b9af71a0; version=31610434bc3523c0b01a10917a1185096a03c4c8 <93e3d88321d2274fa4e26b006e19cc10fec331c2; version=31610434bc3523c0b01a10917a1185096a03c4c8 <c69b442125bf009fce26e15aa5616caf8a3673c3; version=31610434bc3523c0b01a10917a1185096a03c4c8 <fefb8a2a941338d871e2d83fbd65fbfa068857bd

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

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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

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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