GHSA-cj6g-rrgh-rx3w · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: vfio/cdx: Fix NULL pointer...
In the Linux kernel, the following vulnerability has been resolved: vfio/cdx: Fix NULL pointer dereference in interrupt trigger path Add validation to ensure MSI is configured before accessing cdx_irqs array in vfio_cdx_set_msi_trigger(). Without this check, userspace can trigger a NULL pointer dereference by calling VFIO_DEVICE_SET_IRQS with VFIO_IRQ_SET_DATA_BOOL or VFIO_IRQ_SET_DATA_NONE flags before ever setting up interrupts via VFIO_IRQ_SET_DATA_EVENTFD. The vfio_cdx_msi_enable() function allocates the cdx_irqs array and sets config_msi to 1 only when called through the EVENTFD path. The trigger loop (for DATA_BOOL/DATA_NONE) assumed this had already been done, but there was no enforcement of this call ordering. This matches the protection used in the PCI VFIO driver where vfio_pci_set_msi_trigger() checks irq_is() before the trigger loop.
Conclusion & alert: CVE-2026-46034 is rated Low Risk (6.5/100): low exploitation likelihood (EPSS 0.17%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.02% | 0.17% | +0.15% |
| 2 | 2026-05-28 | — | 0.02% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
No CVSS data in dataset for this CVE.
GHSA-cj6g-rrgh-rx3w · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: vfio/cdx: Fix NULL pointer...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-46034 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-46034 |
redhat
|
— | — | https://access.redhat.com/security/cve/CVE-2026-46034 |
suse
|
— | — | https://www.suse.com/security/cve/CVE-2026-46034/ |
ubuntu
|
medium | CVE-2026-46034 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1422 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1024, ignored 169, not-affected 112, released 84, needed 27, pending 6. | https://ubuntu.com/security/CVE-2026-46034 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||