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CVE-2026-64461· NVD / CVE Program· CNA Linux

PCI: mediatek: Fix IRQ domain leak when port fails to enable

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 1fbe8972a39548a633d06d7b03a01b7b119a2c12, 6e6a529d6f779413379b4404c9ef6a36c0337225, ce52e494a7555bdae1d990a2654fd7547ef6d986.

Low priority for now. Upgrade to Linux Linux 1fbe8972a39548a633d06d7b03a01b7b119a2c12, 6e6a529d6f779413379b4404c9ef6a36c0337225, ce52e494a7555bdae1d990a2654fd7547ef6d986 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: PCI: mediatek: Fix IRQ domain leak when port fails to enable When mtk_pcie_enable_port() fails, mtk_pcie_port_free() removes the port from pcie->ports and frees the port structure. However, the IRQ domains set up earlier by mtk_pcie_init_irq_domain() are never freed. Fix this by refactoring mtk_pcie_irq_teardown() into a per-port helper, mtk_pcie_irq_teardown_port(), and calling it from mtk_pcie_setup() when mtk_pcie_enable_port() fails. Since the IRQ teardown must only happen in the probe error path (during resume, child devices may have active MSI mappings and the NOIRQ context prohibits sleeping locks), mtk_pcie_enable_port() is changed to return an error code so callers can distinguish the two paths and act accordingly. This issue was reported by Sashiko while reviewing the EcoNet EN7528 SoC support series.

—No exploit Fix available
Published
Jul 25, 2026
Updated
Aug 17, 2026
EPSS
0.1% · 7th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • 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.

—

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

    • 4.14affected
    • b099631df160ec608cd6147f4d20a8042567a5b8 and later · before e23da72ef202654a7d5269885c4fa39a8404db76affected · git
    • b099631df160ec608cd6147f4d20a8042567a5b8 and later · before ec7c05eed47d8b15c45380aee7ca168a82e15035affected · git
    • b099631df160ec608cd6147f4d20a8042567a5b8 and later · before 1fbe8972a39548a633d06d7b03a01b7b119a2c12affected · git
    • b099631df160ec608cd6147f4d20a8042567a5b8 and later · before fe8c701a53c2816cd82301f66c671d952003c1b0affected · git
    • b099631df160ec608cd6147f4d20a8042567a5b8 and later · before ce52e494a7555bdae1d990a2654fd7547ef6d986affected · git
    • b099631df160ec608cd6147f4d20a8042567a5b8 and later · before 6e6a529d6f779413379b4404c9ef6a36c0337225affected · git
    • b099631df160ec608cd6147f4d20a8042567a5b8 and later · before df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2eaffected · git
    • b099631df160ec608cd6147f4d20a8042567a5b8 and later · before f865a57896bd92d7662eb2818d8f48872e2cbbc7affected · git
    • before 4.14not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:12linux-6.12before 6.12.100-1~deb12u16.12.100-1~deb12u1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.4-17.1.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-64458Jul 25, 2026 · mm/damon/ops-common: handle extreme intervals in damon_hot_score()
    0Monitor
  • ← EarlierCVE-2026-64459Jul 25, 2026 · tcp: restore RCU grace period in tcp_ao_destroy_sock
    39Monitor
  • Later →CVE-2026-64462Jul 25, 2026 · PCI: altera: Fix resource leaks on probe failure
    0Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Linux Linux1fbe8972a39548a633d06d7b03a01b7b119a2c12Vendor (CNA)
Linux Linux6e6a529d6f779413379b4404c9ef6a36c0337225Vendor (CNA)
Linux Linuxce52e494a7555bdae1d990a2654fd7547ef6d986Vendor (CNA)
Linux Linuxdf77314b3bedbd9ad5d6f0682f98b99e3c5f7e2eVendor (CNA)
Linux Linuxe23da72ef202654a7d5269885c4fa39a8404db76Vendor (CNA)
Linux Linuxec7c05eed47d8b15c45380aee7ca168a82e15035Vendor (CNA)
Linux Linuxf865a57896bd92d7662eb2818d8f48872e2cbbc7Vendor (CNA)
Linux Linuxfe8c701a53c2816cd82301f66c671d952003c1b0Vendor (CNA)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.100-1~deb12u1 · Debian:12Package 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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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

  1. Fix✗ → ✓

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

References

Show all references (7 more)

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

All records