fkie_cve-2024-38597
Vulnerability from fkie_nvd
Published
2024-06-19 14:15
Modified
2024-11-21 09:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
eth: sungem: remove .ndo_poll_controller to avoid deadlocks
Erhard reports netpoll warnings from sungem:
netpoll_send_skb_on_dev(): eth0 enabled interrupts in poll (gem_start_xmit+0x0/0x398)
WARNING: CPU: 1 PID: 1 at net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c
gem_poll_controller() disables interrupts, which may sleep.
We can't sleep in netpoll, it has interrupts disabled completely.
Strangely, gem_poll_controller() doesn't even poll the completions,
and instead acts as if an interrupt has fired so it just schedules
NAPI and exits. None of this has been necessary for years, since
netpoll invokes NAPI directly.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: sungem: remove .ndo_poll_controller to avoid deadlocks\n\nErhard reports netpoll warnings from sungem:\n\n netpoll_send_skb_on_dev(): eth0 enabled interrupts in poll (gem_start_xmit+0x0/0x398)\n WARNING: CPU: 1 PID: 1 at net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c\n\ngem_poll_controller() disables interrupts, which may sleep.\nWe can\u0027t sleep in netpoll, it has interrupts disabled completely.\nStrangely, gem_poll_controller() doesn\u0027t even poll the completions,\nand instead acts as if an interrupt has fired so it just schedules\nNAPI and exits. None of this has been necessary for years, since\nnetpoll invokes NAPI directly."
},
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"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: eth: sungem: elimine .ndo_poll_controller para evitar interbloqueos Erhard informa advertencias de netpoll desde sungem: netpoll_send_skb_on_dev(): eth0 habilit\u00f3 interrupciones en la encuesta (gem_start_xmit+0x0/0x398) ADVERTENCIA: CPU: 1 PID: 1 en net/core/netpoll.c:370 netpoll_send_skb+0x1fc/0x20c gem_poll_controller() desactiva las interrupciones, que pueden dormir. No podemos dormir en netpoll, tiene las interrupciones desactivadas por completo. Curiosamente, gem_poll_controller() ni siquiera sondea las finalizaciones y, en cambio, act\u00faa como si se hubiera disparado una interrupci\u00f3n, por lo que simplemente programa NAPI y sale. Nada de esto ha sido necesario durante a\u00f1os, ya que netpoll invoca directamente a NAPI."
}
],
"id": "CVE-2024-38597",
"lastModified": "2024-11-21T09:26:26.783",
"metrics": {
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"published": "2024-06-19T14:15:19.730",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.