fkie_cve-2021-47203
Vulnerability from fkie_nvd
Published
2024-04-10 19:15
Modified
2024-11-21 06:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
When parsing the txq list in lpfc_drain_txq(), the driver attempts to pass
the requests to the adapter. If such an attempt fails, a local "fail_msg"
string is set and a log message output. The job is then added to a
completions list for cancellation.
Processing of any further jobs from the txq list continues, but since
"fail_msg" remains set, jobs are added to the completions list regardless
of whether a wqe was passed to the adapter. If successfully added to
txcmplq, jobs are added to both lists resulting in list corruption.
Fix by clearing the fail_msg string after adding a job to the completions
list. This stops the subsequent jobs from being added to the completions
list unless they had an appropriate failure.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()\n\nWhen parsing the txq list in lpfc_drain_txq(), the driver attempts to pass\nthe requests to the adapter. If such an attempt fails, a local \"fail_msg\"\nstring is set and a log message output. The job is then added to a\ncompletions list for cancellation.\n\nProcessing of any further jobs from the txq list continues, but since\n\"fail_msg\" remains set, jobs are added to the completions list regardless\nof whether a wqe was passed to the adapter. If successfully added to\ntxcmplq, jobs are added to both lists resulting in list corruption.\n\nFix by clearing the fail_msg string after adding a job to the completions\nlist. This stops the subsequent jobs from being added to the completions\nlist unless they had an appropriate failure."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: lpfc: Se corrige la corrupci\u00f3n de list_add() en lpfc_drain_txq() Al analizar la lista txq en lpfc_drain_txq(), el controlador intenta pasar las solicitudes al adaptador. Si dicho intento falla, se establece una cadena \"fail_msg\" local y se genera un mensaje de registro. Luego, el trabajo se agrega a una lista de finalizaciones para su cancelaci\u00f3n. El procesamiento de cualquier otro trabajo de la lista txq contin\u00faa, pero como \"fail_msg\" permanece establecido, los trabajos se agregan a la lista de finalizaciones independientemente de si se pas\u00f3 un wqe al adaptador. Si se agrega correctamente a txcmplq, los trabajos se agregan a ambas listas, lo que da como resultado la corrupci\u00f3n de la lista. Se soluciona borrando la cadena fail_msg despu\u00e9s de agregar un trabajo a la lista de finalizaciones. Esto evita que los trabajos posteriores se agreguen a la lista de finalizaciones a menos que hayan tenido una falla apropiada."
}
],
"id": "CVE-2021-47203",
"lastModified": "2024-11-21T06:35:37.340",
"metrics": {},
"published": "2024-04-10T19:15:48.217",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/16bcbfb56d759c25665f786e33ec633b9508a08f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/814d3610c4ce86e8cf285b2cdac0057a42e82de5"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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},
{
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"url": "https://git.kernel.org/stable/c/ad4776b5eb2e58af1226847fcd3b4f6d051674dd"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/b291d147d0268e93ad866f8bc820ea14497abc9b"
},
{
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"url": "https://git.kernel.org/stable/c/c097bd5a59162156d9c2077a2f58732ffbaa9fca"
},
{
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},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/f05a0191b90156e539cccc189b9d87ca2a4d9305"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/16bcbfb56d759c25665f786e33ec633b9508a08f"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/814d3610c4ce86e8cf285b2cdac0057a42e82de5"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/99154581b05c8fb22607afb7c3d66c1bace6aa5d"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/ad4776b5eb2e58af1226847fcd3b4f6d051674dd"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/b291d147d0268e93ad866f8bc820ea14497abc9b"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/c097bd5a59162156d9c2077a2f58732ffbaa9fca"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/ec70d80a8642900086447ba0cdc79e3f44d42e8f"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/f05a0191b90156e539cccc189b9d87ca2a4d9305"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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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.
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- 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.