5.5

CVE-2022-49653: i2c: piix4: Fix a memory leak in the EFCH MMIO support

Modified
AliasesUBUNTU-CVE-2022-49653DEBIAN-CVE-2022-49653
Published 26-02-2025Last modified 23-05-2026

Vulnerability summary

CVE-2022-49653 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 4
RHSA-2023:2951RHSA-2023:6583SUSE-SU-2025:1027-1SUSE-SU-2025:1176-1SUSE-SU-2025:1183-1SUSE-SU-2025:1241-1

Timeline

  1. 26-02-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.28% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu94 products
  • linux< 5.15.0-50.56
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1021.25
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 4b965566ca26e83553d92b8c57050e5d59911806, < d2bf1a6480e8d44658a8ac3bdcec081238873212 | ≥ 7c148722d074c29fb998578eea5de3c14b9608c9, < a3263e4cf8265f0c9eb0ed8a9b50f132c7a42e19 | ≥ 7c148722d074c29fb998578eea5de3c14b9608c9, < 8ad59b397f86a4d8014966fdc0552095a0c4fb2b | f48190bca4b1a397f2e050efea2c8e8e72049ec8 | ≥ 5.15.42, < 5.15.54 | ≥ 5.17.10, < 5.18 | 5.18
  • linux_kernel≥ 5.15.42, < 5.15.54 | ≥ 5.17.10, < 5.18.11 | 5.19:rc1 | 5.19:rc2 | 5.19:rc3 | 5.19:rc4 | 5.19:rc5
Debian1 product
  • linux< 5.18.14-1

3 vendors · 97 products

References

7 links