fkie_cve-2021-47364
Vulnerability from fkie_nvd
Published
2024-05-21 15:15
Modified
2024-12-26 17:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
comedi: Fix memory leak in compat_insnlist()
`compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST`
ioctl (whenwhen `CONFIG_COMPAT` is enabled). It allocates memory to
temporarily hold an array of `struct comedi_insn` converted from the
32-bit version in user space. This memory is only being freed if there
is a fault while filling the array, otherwise it is leaked.
Add a call to `kfree()` to fix the leak.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 5.15 | |
| linux | linux_kernel | 5.15 |
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"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: Fix memory leak in compat_insnlist()\n\n`compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST`\nioctl (whenwhen `CONFIG_COMPAT` is enabled). It allocates memory to\ntemporarily hold an array of `struct comedi_insn` converted from the\n32-bit version in user space. This memory is only being freed if there\nis a fault while filling the array, otherwise it is leaked.\n\nAdd a call to `kfree()` to fix the leak."
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"lang": "es",
"value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: comedi: Reparar p\u00e9rdida de memoria en compat_insnlist() `compat_insnlist()` maneja la versi\u00f3n de 32 bits del ioctl `COMEDI_INSNLIST` (cuando `CONFIG_COMPAT` est\u00e1 habilitado). Asigna memoria para almacenar temporalmente una matriz de `struct comedi_insn` convertida desde la versi\u00f3n de 32 bits en el espacio de usuario. Esta memoria solo se libera si hay una falla al llenar la matriz; de lo contrario, se pierde. Agregue una llamada a `kfree()` para solucionar la fuga."
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"id": "CVE-2021-47364",
"lastModified": "2024-12-26T17:56:47.957",
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"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": "2024-05-21T15:15:22.497",
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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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