CVE-2022-49653· NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.28% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: Linux Linux 5.15.54, 5.18, 8ad59b397f86a4d8014966fdc0552095a0c4fb2b.

Low priority for now. Upgrade to Linux Linux 5.15.54, 5.18, 8ad59b397f86a4d8014966fdc0552095a0c4fb2b or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available

Denial of service

Published: Feb 26, 2025
Updated: Jun 17, 2026
EPSS: 0.2% · 19th percentile
CWE: CWE-401

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.2%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
linux	linux kernel	cpe:2.3:o:linux:linux_kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

linux linux kernel5.15.42 and later · before 5.15.54
linux linux kernel5.17.10 and later · before 5.18.11
linux linux kernel5.19

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- f48190bca4b1a397f2e050efea2c8e8e72049ec8, 5.18affected
- 4b965566ca26e83553d92b8c57050e5d59911806 and later · before d2bf1a6480e8d44658a8ac3bdcec081238873212affected · git
- 7c148722d074c29fb998578eea5de3c14b9608c9 and later · before a3263e4cf8265f0c9eb0ed8a9b50f132c7a42e19affected · git
- 7c148722d074c29fb998578eea5de3c14b9608c9 and later · before 8ad59b397f86a4d8014966fdc0552095a0c4fb2baffected · git
- 5.15.42 and later · before 5.15.54affected · semver
- 5.17.10 and later · before 5.18affected · semver
- before 5.18not affected · semver
- 5.15.54 and later · up to and including 5.15.*not affected · semver
- 5.18.11 and later · up to and including 5.18.*not affected · semver
- 5.19 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	linux	before 5.18.14-1	5.18.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
89Now
CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
85Now
CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
83Now

Published before and after this one in the same product

← EarlierCVE-2022-49651Feb 26, 2025 · srcu: Tighten cleanup_srcu_struct() GP checks
31Monitor
← EarlierCVE-2022-49652Feb 26, 2025 · dmaengine: ti: Fix refcount leak in ti_dra7_xbar_route_allocate
22Monitor
Later →CVE-2022-49654Feb 26, 2025 · net: dsa: qca8k: reset cpu port on MTU change
22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	5.15.54	Vendor (CNA)
Linux Linux	5.18	Vendor (CNA)
Linux Linux	8ad59b397f86a4d8014966fdc0552095a0c4fb2b	Vendor (CNA)
Linux Linux	a3263e4cf8265f0c9eb0ed8a9b50f132c7a42e19	Vendor (CNA)
Linux Linux	d2bf1a6480e8d44658a8ac3bdcec081238873212	Vendor (CNA)
debian:linux	5.18.14-1 · Debian:12	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Someone with local access to the system can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-401 · Missing Release of Memory after Effective Lifetime

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:08 PM UTC

For records you follow, these changes also arrive as notifications. →

References

git.kernel.org/stable/c/8ad59b397f86a4d8014966fdc0552095a0c4fb2b

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records