CVE-2022-49095

Local service interruption via leaked I/O mappings

Published Feb 26, 2025 · Updated May 11, 2026

Resource leakage in the Linux kernel allows local users to interrupt service by repeatedly removing an affected Zorro SCSI device. The zorro7xx_remove_one() teardown path releases the device without calling iounmap() for a Zorro III mapping, leaving that I/O region allocated. Exploitation requires local access and an Amiga-family Zorro III SCSI controller; repeated removals can exhaust mapped I/O resources.

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

Resource leakage in the Linux kernel allows local users to interrupt service by repeatedly removing an affected Zorro SCSI device. The zorro7xx_remove_one() teardown path releases the device without calling iounmap() for a Zorro III mapping, leaving that I/O region allocated. Exploitation requires local access and an Amiga-family Zorro III SCSI controller; repeated removals can exhaust mapped I/O resources.

The record

CVE
CVE-2022-49095
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
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

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=2.6.23
  2. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <16ed828b872d12ccba8f07bcc446ae89ba662f9c
  3. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <1e0c01319dedf1e63ec5df37ead048e17afd92ba
  4. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <34a47f7ddb4fd1cbd12397aa6f7dad1de08b4050
  5. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <a845c678e094894f38cc9526d212b21933ce44c7
  6. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <aefd755a96051aa56b198cb7ecd168b22ba384f6
  7. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <c5f77b595379b5191316edd365a542f8b1526066
  8. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <ce430cfad6a5385d5b7f7c1dc3fa50f10abfd41b
  9. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <db863ab2baf058ed05c7b723612e3c40c9dd6885
  10. Affected versionversion=45804fbb00eea27bdf4d62751681228a9e2844e9 <de6aee0978f164d3d0c771ce03e3066a26c371c5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.23; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <16ed828b872d12ccba8f07bcc446ae89ba662f9c; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <1e0c01319dedf1e63ec5df37ead048e17afd92ba; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <34a47f7ddb4fd1cbd12397aa6f7dad1de08b4050; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <a845c678e094894f38cc9526d212b21933ce44c7; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <aefd755a96051aa56b198cb7ecd168b22ba384f6; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <c5f77b595379b5191316edd365a542f8b1526066; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <ce430cfad6a5385d5b7f7c1dc3fa50f10abfd41b; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <db863ab2baf058ed05c7b723612e3c40c9dd6885; version=45804fbb00eea27bdf4d62751681228a9e2844e9 <de6aee0978f164d3d0c771ce03e3066a26c371c5

Published CVSS scores

5.5Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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-401Missing Release of Memory after Effective Lifetime
T1499.004Endpoint Denial of Service: Application 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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