CVE-2026-98429
RDMA/efa: Keep EQ resources alive while IRQ is registered
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Keep EQ resources alive while IRQ is registered The completion IRQ handler accesses the EQ state and DMA buffer. Its IRQ was registered before that state was initialized, while teardown released the buffer before free_irq() synchronized the handler. Initialize the EQ without arming it, register the IRQ, and then arm it. Reverse the resource order during teardown by freeing the IRQ before destroying the EQ.
INFO
Published Date :
Oct. 14, 2026, 2:17 p.m.
Last Modified :
Oct. 14, 2026, 2:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Initialize EQ without arming it before IRQ registration.
- Arm EQ after IRQ registration.
- Free IRQ before destroying EQ during teardown.
- Apply kernel updates to resolve the race condition.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-98429.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-98429 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-98429
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-98429 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-98429 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 14, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Keep EQ resources alive while IRQ is registered The completion IRQ handler accesses the EQ state and DMA buffer. Its IRQ was registered before that state was initialized, while teardown released the buffer before free_irq() synchronized the handler. Initialize the EQ without arming it, register the IRQ, and then arm it. Reverse the resource order during teardown by freeing the IRQ before destroying the EQ. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/98xxx/CVE-2026-98429.json">CVE-2026-98429</a> Added Reference https://git.kernel.org/stable/c/38871ff47e2a02f8d9a333a65f358d987247b5b0 Added Reference https://git.kernel.org/stable/c/3cd652dfcd822af26ba75d6d2d245ea7f73b499e Added Reference https://git.kernel.org/stable/c/795eb34bfd8b1ab347adc41a11e4bb97c3ac0ce6 Added Reference https://git.kernel.org/stable/c/9ecd3dcbdf1f315aadc049b291f59c79dc478062 Added Reference https://git.kernel.org/stable/c/c767e2812cac83fef70fb8932c3f0fe97dff9388 Added Reference https://git.kernel.org/stable/c/e22a3627b7151754f07f90ea3d1ab6e85f5d93f4