What’s Vulnerable › Vulnerabilities

CVE-2026-98430: RDMA/efa: Keep admin queues alive while IRQ is registered

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Keep admin queues alive while IRQ is registered The management IRQ handler accesses both the admin completion queue and the async event queue. The driver registered the IRQ before constructing these queues and destroyed them before freeing the IRQ, so the handler's lifetime was not contained by the resources it accesses. Initialize the queues with interrupts masked, request the IRQ, and then switch to interrupt mode. On removal, reset the device and free the IRQ before destroying the queues. Also reset the device before destroying the queues if IRQ registration fails, because the device already has their DMA addresses.

Affected products

• Linux kernel: 5.2 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/00f7df59543cce445cfd2f109ace88c17d8aef4d
• https://git.kernel.org/stable/c/0a8a105978e5ace0d885964317c5aed8ab4c0a0c
• https://git.kernel.org/stable/c/bc7e64bad96c23fb343f47689670d0037f1a65e7
• https://git.kernel.org/stable/c/cf5520d1c931a70ccce0a1a247113bcec47a42be
• https://git.kernel.org/stable/c/d2a1c0bf4139c17b8d7668322b78c28d8c5b2dd0
• https://git.kernel.org/stable/c/e08aca85c02ff290f785f07acae758f0daf5f49e

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