cve-2021-47095
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-11-04 11:59
Severity ?
EPSS score ?
Summary
ipmi: ssif: initialize ssif_info->client early
References
{
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"id": "CVE-2021-47095",
"options": [
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"Exploitation": "none"
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"Automatable": "no"
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"Technical Impact": "partial"
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"role": "CISA Coordinator",
"timestamp": "2024-03-04T20:32:21.801460Z",
"version": "2.0.3"
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"affected": [
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"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/char/ipmi/ipmi_ssif.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: ssif: initialize ssif_info-\u003eclient early\n\nDuring probe ssif_info-\u003eclient is dereferenced in error path. However,\nit is set when some of the error checking has already been done. This\ncauses following kernel crash if an error path is taken:\n\n[ 30.645593][ T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present\n[ 30.657616][ T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088\n...\n[ 30.657723][ T674] pc : __dev_printk+0x28/0xa0\n[ 30.657732][ T674] lr : _dev_err+0x7c/0xa0\n...\n[ 30.657772][ T674] Call trace:\n[ 30.657775][ T674] __dev_printk+0x28/0xa0\n[ 30.657778][ T674] _dev_err+0x7c/0xa0\n[ 30.657781][ T674] ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e]\n[ 30.657791][ T674] i2c_device_probe+0x37c/0x3c0\n...\n\nInitialize ssif_info-\u003eclient before any error path can be taken. Clear\ni2c_client data in the error path to prevent the dangling pointer from\nleaking."
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"dateUpdated": "2024-11-04T11:59:18.664Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"title": "ipmi: ssif: initialize ssif_info-\u003eclient early",
"x_generator": {
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2021-47095",
"datePublished": "2024-03-04T18:10:46.553Z",
"dateReserved": "2024-02-29T22:33:44.300Z",
"dateUpdated": "2024-11-04T11:59:18.664Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
"dataVersion": "5.1",
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"nvd": "{\"cve\":{\"id\":\"CVE-2021-47095\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-04T18:15:07.907\",\"lastModified\":\"2024-03-05T13:41:01.900\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipmi: ssif: initialize ssif_info-\u003eclient early\\n\\nDuring probe ssif_info-\u003eclient is dereferenced in error path. However,\\nit is set when some of the error checking has already been done. This\\ncauses following kernel crash if an error path is taken:\\n\\n[ 30.645593][ T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present\\n[ 30.657616][ T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088\\n...\\n[ 30.657723][ T674] pc : __dev_printk+0x28/0xa0\\n[ 30.657732][ T674] lr : _dev_err+0x7c/0xa0\\n...\\n[ 30.657772][ T674] Call trace:\\n[ 30.657775][ T674] __dev_printk+0x28/0xa0\\n[ 30.657778][ T674] _dev_err+0x7c/0xa0\\n[ 30.657781][ T674] ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e]\\n[ 30.657791][ T674] i2c_device_probe+0x37c/0x3c0\\n...\\n\\nInitialize ssif_info-\u003eclient before any error path can be taken. Clear\\ni2c_client data in the error path to prevent the dangling pointer from\\nleaking.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipmi: ssif: inicializa ssif_info-\u0026gt;client temprano Durante la sonda, ssif_info-\u0026gt;client se desreferencia en la ruta de error. Sin embargo, se establece cuando ya se ha realizado parte de la verificaci\u00f3n de errores. Esto provoca el siguiente fallo del kernel si se toma una ruta de error: [30.645593][ T674] ipmi_ssif 0-000e: ipmi_ssif: No sondeando, la interfaz ya est\u00e1 presente [30.657616][ T674] No se puede manejar la desreferencia del puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000088. [ 30.657723][ T674] pc : __dev_printk+0x28/0xa0 [ 30.657732][ T674] lr : _dev_err+0x7c/0xa0 ... [ 30.657772][ T674] Rastreo de llamadas: [ 30.657775][ T674] __dev_printk+0x28/0 xa0 [ 30.657778][ T674] _dev_err+0x7c/0xa0 [ 30.657781][ T674] ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e] [ 30.65779 1][T674] i2c_device_probe+0x37c/0x3c0... Inicialice ssif_info-\u0026gt;client antes de que pueda aparecer cualquier ruta de error. ser tomado. Borre los datos de i2c_client en la ruta del error para evitar que se filtre el puntero colgante.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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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.