CVE-2026-64461PCI: mediatek: Fix IRQ domain leak when port fails to enable
- 5.5MediumCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 92% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 3 months later
· 3 months later
Record updated
- 6 days later
· 6 days later
First scored
Medium 5.5
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected b099631df160ec608cd6147f4d20a8042567a5b8 – < e23da72ef202654a7d5269885c4fa39a8404db76
- affected b099631df160ec608cd6147f4d20a8042567a5b8 – < ec7c05eed47d8b15c45380aee7ca168a82e15035
- affected b099631df160ec608cd6147f4d20a8042567a5b8 – < 1fbe8972a39548a633d06d7b03a01b7b119a2c12
- affected b099631df160ec608cd6147f4d20a8042567a5b8 – < fe8c701a53c2816cd82301f66c671d952003c1b0
- affected b099631df160ec608cd6147f4d20a8042567a5b8 – < ce52e494a7555bdae1d990a2654fd7547ef6d986
- affected b099631df160ec608cd6147f4d20a8042567a5b8 – < 6e6a529d6f779413379b4404c9ef6a36c0337225
- affected b099631df160ec608cd6147f4d20a8042567a5b8 – < df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e
- affected b099631df160ec608cd6147f4d20a8042567a5b8 – < f865a57896bd92d7662eb2818d8f48872e2cbbc7
- affected 4.14
- unaffected < 4.14
- unaffected 5.10.261 – ≤ 5.10.*
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.39 – ≤ 6.18.*
- unaffected 7.1.4 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76 (opens in a new tab)
- https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035 (opens in a new tab)
- https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12 (opens in a new tab)
- https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0 (opens in a new tab)
- https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986 (opens in a new tab)
- https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225 (opens in a new tab)
- https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e (opens in a new tab)
- https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-48805 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64461)Record last updated .