# CVE-2024-35816: linux: In the Linux kernel, the following vulnerability has been resolved:  firewire: ohci: prevent leak of left-over IRQ on...

CVE-2024-35816 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-35816, released May 17, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-35816
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 17, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  firewire: ohci: prevent leak of left-over IRQ on unbind  Commit 5a95f1ded28691e6 ("firewire: ohci: use devres for requested IRQ") also removed the call to free_irq() in pci_remove(), leading to a leftover irq of devm_request_irq() at pci_disable_msi() in pci_remove() when unbinding the driver from the device  remove_proc_entry: removing non-empty directory 'irq/136', leaking at least 'firewire_ohci' Call Trace:  ? remove_proc_entry+0x19c/0x1c0  ? __warn+0x81/0x130  ? remove_proc_entry+0x19c/0x1c0  ? report_bug+0x171/0x1a0  ? console_unlock+0x78/0x120  ? handle_bug+0x3c/0x80  ? exc_invalid_op+0x17/0x70  ? asm_exc_invalid_op+0x1a/0x20  ? remove_proc_entry+0x19c/0x1c0  unregister_irq_proc+0xf4/0x120  free_desc+0x3d/0xe0  ? kfree+0x29f/0x2f0  irq_free_descs+0x47/0x70  msi_domain_free_locked.part.0+0x19d/0x1d0  msi_domain_free_irqs_all_locked+0x81/0xc0  pci_free_msi_irqs+0x12/0x40  pci_disable_msi+0x4c/0x60  pci_remove+0x9d/0xc0 [firewire_ohci      01b483699bebf9cb07a3d69df0aa2bee71db1b26]  pci_device_remove+0x37/0xa0  device_release_driver_internal+0x19f/0x200  unbind_store+0xa1/0xb0  remove irq with devm_free_irq() before pci_disable_msi() also remove it in fail_msi: of pci_probe() as this would lead to an identical leak

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.7.12-1 | [DEBIAN-CVE-2024-35816](https://patchblox.com/security/data/fix/linux/debian-cve-2024-35816.md) | May 17, 2024 |
| Linux | linux Debian 14 | 6.7.12-1 | [DEBIAN-CVE-2024-35816](https://patchblox.com/security/data/fix/linux/debian-cve-2024-35816.md) | May 17, 2024 |

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