net: ibm: emac: mal: fix potential system hang in mal_remove()
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- 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: net: ibm: emac: mal: fix potential system hang in mal_remove() napi_disable() is not idempotent and calling it on an already-disabled or unenabled NAPI context will cause the kernel to spin indefinitely waiting for the NAPI_STATE_SCHED bit to clear. In mal_remove(), napi_disable() is called unconditionally. If no MACs were registered, NAPI was never enabled. Also, if they were registered but subsequently unregistered, NAPI was already disabled in mal_unregister_commac(). In either case, calling napi_disable() causes the kernel to hang upon module removal. Fix this by only calling napi_disable() in mal_remove() if the commac list is not empty (which implies NAPI is enabled).
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 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 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
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-97411
- 2026-10-03 Alias added: GHSA-wcg4-82x5-ppxc
- 2026-10-03 Fix available: Linux/Linux@34c4cae51718d6f393415e01c61314c1bde02f2e, Linux/[email protected], Linux/[email protected] +5 · CNA
- 2026-10-03 4 new references · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 7
- https://git.kernel.org/stable/c/9c1c814a662d9c81959eba591bb52b24639390f2
- https://git.kernel.org/stable/c/34c4cae51718d6f393415e01c61314c1bde02f2e
- https://git.kernel.org/stable/c/62126e73e230cf4bd6c27cf201949c4290af84a1
- https://git.kernel.org/stable/c/f0399b3e212741bc5a64b8399d6266c4a150bdfe
- https://git.kernel.org/stable/c/f6c1aad9b35fa083f48ce0c5926204891d82e089
- https://git.kernel.org/stable/c/c4cb9a728df66c46067b26263f5beb633aae4087
- https://git.kernel.org/stable/c/7c5d41f87f079990bf241359e3c1332d8d10fe87
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Sources
- CVE-2026-97411 · CVE Program
- CVE-2026-97411 · NVD
- FIRST EPSS
- GHSA-wcg4-82x5-ppxc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-97411 · Red Hat security data · CC BY 4.0
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