RDMA/hns: Fix log flood after cmd_mbox failure
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-74389
- 2026-10-03 Alias added: GHSA-r243-5f6v-4cpg
- 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@a6c5f5d98719e69228512390d5db3bf4b6468064 · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-30 Fix available: Linux/[email protected], Linux/Linux@a194e535019e0b32831f16b0eafd83c54d57ccbb · CNA
- 2026-10-30 1 new reference · CNA
References
Other 6
- https://git.kernel.org/stable/c/a194e535019e0b32831f16b0eafd83c54d57ccbb
- https://git.kernel.org/stable/c/a6c5f5d98719e69228512390d5db3bf4b6468064
- https://git.kernel.org/stable/c/7d9fbee252f84de3e6947a40eec01481c9d8afbb
- https://git.kernel.org/stable/c/66f44ec974ab372e4e1ee9eac4245237c94e8f68
- https://git.kernel.org/stable/c/f3c9e84268e9fa613d40d6c138fb6969c35879b5
- https://git.kernel.org/stable/c/bbd97d71e53e551890e4115ad9de46b5f2ac0858
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Sources
- CVE-2026-74389 · CVE Program
- CVE-2026-74389 · NVD
- FIRST EPSS
- GHSA-r243-5f6v-4cpg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-74389 · Red Hat security data · CC BY 4.0
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