CVE-2026-74389
RDMA/hns: Fix log flood after cmd_mbox failure
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix log flood after cmd_mbox failure hns_roce_cmd_mbox() is the command interface between driver and hardware. When hardware is abnormal, the unlimited error printings after hns_roce_cmd_mbox() failure will cause log flood and even system crash. Replace ibdev_err() and ibdev_warn() with their ratelimited versions in the error handling path after hns_roce_cmd_mbox() (and its wrappers hns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 15, 2026, 6:22 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74389
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply kernel patches for RDMA/hns driver.
- Use ratelimited error logging functions.
- Replace ibdev_err() and ibdev_warn() calls.
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-2026-74389.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74389 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-2026-74389
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-2026-74389 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74389 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.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '9a4435375cd151e07c0c38fa601b00115986091b', 'lessThan': '7d9fbee252f84de3e6947a40eec01481c9d8afbb', 'versionType': 'git'}, {'status': 'affected', 'version': '9a4435375cd151e07c0c38fa601b00115986091b', 'lessThan': '66f44ec974ab372e4e1ee9eac4245237c94e8f68', 'versionType': 'git'}, {'status': 'affected', 'version': '9a4435375cd151e07c0c38fa601b00115986091b', 'lessThan': 'f3c9e84268e9fa613d40d6c138fb6969c35879b5', 'versionType': 'git'}, {'status': 'affected', 'version': '9a4435375cd151e07c0c38fa601b00115986091b', 'lessThan': 'bbd97d71e53e551890e4115ad9de46b5f2ac0858', 'versionType': 'git'}], 'programFiles': ['drivers/infiniband/hw/hns/hns_roce_cq.c', 'drivers/infiniband/hw/hns/hns_roce_hw_v2.c', 'drivers/infiniband/hw/hns/hns_roce_mr.c', 'drivers/infiniband/hw/hns/hns_roce_srq.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/infiniband/hw/hns/hns_roce_cq.c', 'drivers/infiniband/hw/hns/hns_roce_hw_v2.c', 'drivers/infiniband/hw/hns/hns_roce_mr.c', 'drivers/infiniband/hw/hns/hns_roce_srq.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix log flood after cmd_mbox failure hns_roce_cmd_mbox() is the command interface between driver and hardware. When hardware is abnormal, the unlimited error printings after hns_roce_cmd_mbox() failure will cause log flood and even system crash. Replace ibdev_err() and ibdev_warn() with their ratelimited versions in the error handling path after hns_roce_cmd_mbox() (and its wrappers hns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails. Added Reference https://git.kernel.org/stable/c/66f44ec974ab372e4e1ee9eac4245237c94e8f68 Added Reference https://git.kernel.org/stable/c/7d9fbee252f84de3e6947a40eec01481c9d8afbb Added Reference https://git.kernel.org/stable/c/bbd97d71e53e551890e4115ad9de46b5f2ac0858 Added Reference https://git.kernel.org/stable/c/f3c9e84268e9fa613d40d6c138fb6969c35879b5