# CVE-2026-23013: linux: In the Linux kernel, the following vulnerability has been resolved:  net: octeon_ep_vf: fix free_irq dev_id mismatch...

CVE-2026-23013 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-23013, released January 25, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-23013
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 25, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  net: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback  octep_vf_request_irqs() requests MSI-X queue IRQs with dev_id set to ioq_vector. If request_irq() fails part-way, the rollback loop calls free_irq() with dev_id set to 'oct', which does not match the original dev_id and may leave the irqaction registered.  This can keep IRQ handlers alive while ioq_vector is later freed during unwind/teardown, leading to a use-after-free or crash when an interrupt fires.  Fix the error path to free IRQs with the same ioq_vector dev_id used during request_irq().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.69-1 | [DEBIAN-CVE-2026-23013](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23013.md) | Jan 25, 2026 |
| Linux | linux Debian 14 | 6.18.8-1 | [DEBIAN-CVE-2026-23013](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23013.md) | Jan 25, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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