fkie_cve-2022-49376
Vulnerability from fkie_nvd
Published
2025-02-26 07:01
Modified
2025-04-14 20:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: sd: Fix potential NULL pointer dereference
If sd_probe() sees an early error before sdkp->device is initialized,
sd_zbc_release_disk() is called. This causes a NULL pointer dereference
when sd_is_zoned() is called inside that function. Avoid this by removing
the call to sd_zbc_release_disk() in sd_probe() error path.
This change is safe and does not result in zone information memory leakage
because the zone information for a zoned disk is allocated only when
sd_revalidate_disk() is called, at which point sdkp->disk_dev is fully set,
resulting in sd_disk_release() being called when needed to cleanup a disk
zone information using sd_zbc_release_disk().
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: sd: Fix potential NULL pointer dereference\n\nIf sd_probe() sees an early error before sdkp-\u003edevice is initialized,\nsd_zbc_release_disk() is called. This causes a NULL pointer dereference\nwhen sd_is_zoned() is called inside that function. Avoid this by removing\nthe call to sd_zbc_release_disk() in sd_probe() error path.\n\nThis change is safe and does not result in zone information memory leakage\nbecause the zone information for a zoned disk is allocated only when\nsd_revalidate_disk() is called, at which point sdkp-\u003edisk_dev is fully set,\nresulting in sd_disk_release() being called when needed to cleanup a disk\nzone information using sd_zbc_release_disk()."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: sd: Se corrige una posible desreferencia de puntero NULL Si sd_probe() detecta un error temprano antes de que se inicialice sdkp-\u0026gt;device, se llama a sd_zbc_release_disk(). Esto provoca una desreferencia de puntero NULL cuando se llama a sd_is_zoned() dentro de esa funci\u00f3n. Evite esto eliminando la llamada a sd_zbc_release_disk() en la ruta de error de sd_probe(). Este cambio es seguro y no da como resultado una p\u00e9rdida de memoria de informaci\u00f3n de zona porque la informaci\u00f3n de zona para un disco zonificado se asigna solo cuando se llama a sd_revalidate_disk(), momento en el que sdkp-\u0026gt;disk_dev est\u00e1 completamente configurado, lo que da como resultado que se llame a sd_disk_release() cuando sea necesario para limpiar la informaci\u00f3n de zona de un disco mediante sd_zbc_release_disk()."
}
],
"id": "CVE-2022-49376",
"lastModified": "2025-04-14T20:37:57.360",
"metrics": {
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"attackVector": "LOCAL",
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"baseScore": 5.5,
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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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"source": "nvd@nist.gov",
"type": "Primary"
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}
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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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