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CVE-2022-49653

i2c: piix4: Fix a memory leak in the EFCH MMIO support

Medium5.5EPSS 0.28%
Published
Updated
Reserved
Assigned by
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: piix4: Fix a memory leak in the EFCH MMIO support The recently added support for EFCH MMIO regions introduced a memory leak in that code path. The leak is caused by the fact that release_resource() merely removes the resource from the tree but does not free its memory. We need to call release_mem_region() instead, which does free the memory. As a nice side effect, this brings back some symmetry between the legacy and MMIO paths.

Scores

CVSS scores of CVE-2022-49653, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.28% · top 79% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Weakness

Affected products

  • Linux · Linux

    • affected 4b965566ca26e83553d92b8c57050e5d59911806 – < d2bf1a6480e8d44658a8ac3bdcec081238873212
    • affected 7c148722d074c29fb998578eea5de3c14b9608c9 – < a3263e4cf8265f0c9eb0ed8a9b50f132c7a42e19
    • affected 7c148722d074c29fb998578eea5de3c14b9608c9 – < 8ad59b397f86a4d8014966fdc0552095a0c4fb2b
    • affected f48190bca4b1a397f2e050efea2c8e8e72049ec8
    • affected 5.15.42 – < 5.15.54
    • affected 5.17.10 – < 5.18

  • Linux · Linux

    • affected 5.18
    • unaffected < 5.18
    • unaffected 5.15.54 – ≤ 5.15.*
    • unaffected 5.18.11 – ≤ 5.18.*
    • unaffected 5.19 – ≤ *

References (3)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .