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CVE-2026-93072— irqchip/renesas-irqc: Fix generic interrupt chip leak on remove

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： irqchip/renesas-irqc：修复移除时通用中断芯片的内存泄漏问题 该驱动在探测（probe）阶段会分配中断域的通用中断芯片（generic chips）。然而，在驱动移除时，由于中断域的标志位中未包含 IRQ_DOMAIN_FLAG_DESTROY_GC，导致在移除中断域时，这些通用中断芯片并不会被自动释放。 这会导致中断域的通用芯片结构体及其关联的通用芯片发生内存泄漏。此外，这些通用芯片仍保留在全局列表中，可能在驱动移除后，被通用中断芯片的挂起（suspen

AI Predicted 5.5 Difficulty: Moderate EPSS 0.20% · P9

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 99c221df33fbfa1b30e15dee879eb0a9ae1be353< 3d39757ef791f90028da9c8b7c1fbbb497237e58 affected
99c221df33fbfa1b30e15dee879eb0a9ae1be353< 4bf7614d048434326081eef0ebef33cb77fe2ffc affected
99c221df33fbfa1b30e15dee879eb0a9ae1be353< 9acc996cb2e8477ae81bd7c067fec15202d6bc89 affected
99c221df33fbfa1b30e15dee879eb0a9ae1be353< 7c614f83301d464e2fb498d63552490d137ea10d affected
99c221df33fbfa1b30e15dee879eb0a9ae1be353< 616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba affected
4.4 affected
< 4.4 unaffected
6.6.157≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-93072

Vulnerability Information
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Vulnerability Title
irqchip/renesas-irqc: Fix generic interrupt chip leak on remove
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: irqchip/renesas-irqc: Fix generic interrupt chip leak on remove The driver allocates domain generic chips probe. However, on driver removal, the generic chips are not automatically freed when the interrupt domain is removed because the domain flags do not include IRQ_DOMAIN_FLAG_DESTROY_GC. This causes both the domain generic chips structure and the associated generic chips to be leaked. Additionally, the generic chips remain on the global list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash. Fix the resource leak by setting IRQ_DOMAIN_FLAG_DESTROY_GC on the interrupt domain; this lets the interrupt domain core automatically release all generic chips when irq_domain_remove() is invoked, removing the need for manual cleanup calls in error paths and remove callback.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 99c221df33fbfa1b30e15dee879eb0a9ae1be353 ~ 3d39757ef791f90028da9c8b7c1fbbb497237e58 -
Linux Linux 4.4 -

II. Public POCs for CVE-2026-93072

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III. Intelligence Information for CVE-2026-93072

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Patches & Fixes for CVE-2026-93072 (5)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90240 8.8 HIGH iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too
CVE-2026-93042 8.8 HIGH dmaengine: dw-edma: Terminate all descriptors without callbacks
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90380 8.8 HIGH wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete
CVE-2026-90381 8.8 HIGH wifi: mt76: fix handling channel context with different bands in mt76_switch_vif_chanctx()
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93072

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