CVE-2026-64461PCI: mediatek: Fix IRQ domain leak when port fails to enable
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b099631df160ec608cd6147f4d20a8042567a5b8 before e23da72ef202654a7d5269885c4fa39a8404db76; from b099631df160ec608cd6147f4d20a8042567a5b8 before ec7c05eed47d8b15c45380aee7ca168a82e15035; from b099631df160ec608cd6147f4d20a8042567a5b8 before 1fbe8972a39548a633d06d7b03a01b7b119a2c12; from b099631df160ec608cd6147f4d20a8042567a5b8 before fe8c701a53c2816cd82301f66c671d952003c1b0; from b099631df160ec608cd6147f4d20a8042567a5b8 before ce52e494a7555bdae1d990a2654fd7547ef6d986; from b099631df160ec608cd6147f4d20a8042567a5b8 before 6e6a529d6f779413379b4404c9ef6a36c0337225; from b099631df160ec608cd6147f4d20a8042567a5b8 before df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e; from b099631df160ec608cd6147f4d20a8042567a5b8 before f865a57896bd92d7662eb2818d8f48872e2cbbc7 | CNA record |
References
- https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76
- https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035
- https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12
- https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0
- https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986
- https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225
- https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e
- https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.