fkie_cve-2021-47040
Vulnerability from fkie_nvd
Published
2024-02-28 09:15
Modified
2025-01-09 15:29
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
io_uring: fix overflows checks in provide buffers
Colin reported before possible overflow and sign extension problems in
io_provide_buffers_prep(). As Linus pointed out previous attempt did nothing
useful, see d81269fecb8ce ("io_uring: fix provide_buffers sign extension").
Do that with help of check_<op>_overflow helpers. And fix struct
io_provide_buf::len type, as it doesn't make much sense to keep it
signed.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| 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\nio_uring: fix overflows checks in provide buffers\n\nColin reported before possible overflow and sign extension problems in\nio_provide_buffers_prep(). As Linus pointed out previous attempt did nothing\nuseful, see d81269fecb8ce (\"io_uring: fix provide_buffers sign extension\").\n\nDo that with help of check_\u003cop\u003e_overflow helpers. And fix struct\nio_provide_buf::len type, as it doesn\u0027t make much sense to keep it\nsigned."
},
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"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: io_uring: soluciona comprobaciones de desbordamiento en los buffers de suministro que Colin inform\u00f3 antes de posibles problemas de desbordamiento y extensi\u00f3n de firma en io_provide_buffers_prep(). Como Linus se\u00f1al\u00f3 que el intento anterior no hizo nada \u00fatil, consulte d81269fecb8ce (\"io_uring: corrige la extensi\u00f3n de signo provide_buffers\"). Haga esto con la ayuda de los ayudantes check__overflow. Y corrija el tipo struct io_provide_buf::len, ya que no tiene mucho sentido mantenerlo firmado."
}
],
"id": "CVE-2021-47040",
"lastModified": "2025-01-09T15:29:49.397",
"metrics": {
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"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"source": "nvd@nist.gov",
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"published": "2024-02-28T09:15:39.993",
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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.
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