CVE-2026-97411
Severity not reportedIn the Linux kernel, the following vulnerability has been resolved: net: ibm: emac: mal: fix potential system hang in mal_remove() napi_disable() is not idem…
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).
Affected products
Not reported by the source (unknown — not "none").
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://git.kernel.org/stable/c/34c4cae51718d6f393415e01c61314c1bde02f2e 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/62126e73e230cf4bd6c27cf201949c4290af84a1 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/7c5d41f87f079990bf241359e3c1332d8d10fe87 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/9c1c814a662d9c81959eba591bb52b24639390f2 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/c4cb9a728df66c46067b26263f5beb633aae4087 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/f0399b3e212741bc5a64b8399d6266c4a150bdfe 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- https://git.kernel.org/stable/c/f6c1aad9b35fa083f48ce0c5926204891d82e089 416baaa9-dc9f-4396-8d5f-8c081fb06d67