CVE-2022-48908

Local system crash via missing PCI card data

Published Aug 22, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel allows local users to crash the system while initializing certain COM20020 PCI devices. In com20020pci_probe(), the driver dereferences the ci pointer even when the matched com20020pci_id_table entry supplies no card information. Reachability requires local access and a matching PCI device with an empty card-information entry; the bounded consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel allows local users to crash the system while initializing certain COM20020 PCI devices. In com20020pci_probe(), the driver dereferences the ci pointer even when the matched com20020pci_id_table entry supplies no card information. Reachability requires local access and a matching PCI device with an empty card-information entry; the bounded consequence is a kernel crash.

The record

CVE
CVE-2022-48908
Published
Aug 22, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 22, 2024CVE 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=3.18
  2. Affected versionversion=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <5f394102ee27dbf051a4e283390cd8d1759dacea
  3. Affected versionversion=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <8e3bc7c5bbf87e86e9cd652ca2a9166942d86206
  4. Affected versionversion=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049
  5. Affected versionversion=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <b838add93e1dd98210482dc433768daaf752bdef
  6. Affected versionversion=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d
  7. Affected versionversion=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <ca0bdff4249a644f2ca7a49d410d95b8dacf1f72
  8. Affected versionversion=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <e50c589678e50f8d574612e473ca60ef45190896
  9. Affected versionversion=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <ea372aab54903310756217d81610901a8e66cb7d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.18; version=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <5f394102ee27dbf051a4e283390cd8d1759dacea; version=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <8e3bc7c5bbf87e86e9cd652ca2a9166942d86206; version=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049; version=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <b838add93e1dd98210482dc433768daaf752bdef; version=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d; version=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <ca0bdff4249a644f2ca7a49d410d95b8dacf1f72; version=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <e50c589678e50f8d574612e473ca60ef45190896; version=8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f <ea372aab54903310756217d81610901a8e66cb7d

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS: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

CWE-476NULL Pointer Dereference

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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