CVE-2026-23013 Details
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().
A vulnerability in the Linux kernel's Octeon EP virtual function (VF) network driver can cause a use-after-free condition or a crash. This issue arises because the driver improperly manages interrupt request (IRQ) identifiers during error handling. When the driver requests MSI-X queue IRQs, it uses the I/O queue vector as the device ID. If this request fails partway, the rollback process frees the IRQ using a different device ID, which can leave the IRQ action registered. As a result, IRQ handlers may remain active while the I/O queue vector is later freed, leading to a use-after-free situation or a crash when an interrupt occurs.
Users can apply the patch available in the Linux kernel stable tree to address this vulnerability. The patch is included in the official Linux kernel repositories.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/aa05a8371ae4a452df623f7202c72409d3c50e40 | kernel.org | Patch |
| https://git.kernel.org/stable/c/aa4c066229b05fc3d3c5f42693d25b1828533b6e | kernel.org | Patch |
| https://git.kernel.org/stable/c/f93fc5d12d69012788f82151bee55fce937e1432 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.9.1, < 6.12.67 >= 6.13, < 6.18.7 6.9 - 6.19 rc1 6.19 rc2 6.19 rc3 6.19 rc4 6.19 rc5 6.19 rc6 6.19 rc7 6.19 rc8 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 3, 2026 | CVE Modified | kernel.org |
| Mar 25, 2026 | Initial Analysis | [email protected] |
| Jan 25, 2026 | New CVE Received | kernel.org |