CVE-2026-97411
Description
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).
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/34c4cae51718d6f393415e01c61314c1bde02f2envd
- git.kernel.org/stable/c/62126e73e230cf4bd6c27cf201949c4290af84a1nvd
- git.kernel.org/stable/c/7c5d41f87f079990bf241359e3c1332d8d10fe87nvd
- git.kernel.org/stable/c/9c1c814a662d9c81959eba591bb52b24639390f2nvd
- git.kernel.org/stable/c/c4cb9a728df66c46067b26263f5beb633aae4087nvd
- git.kernel.org/stable/c/f0399b3e212741bc5a64b8399d6266c4a150bdfenvd
- git.kernel.org/stable/c/f6c1aad9b35fa083f48ce0c5926204891d82e089nvd
News mentions
0No linked articles in our index yet.