ghsa-pqmh-qr2r-5wwj
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
ipmi: ssif: initialize ssif_info->client early
During probe ssif_info->client is dereferenced in error path. However, it is set when some of the error checking has already been done. This causes following kernel crash if an error path is taken:
[ 30.645593][ T674] ipmi_ssif 0-000e: ipmi_ssif: Not probing, Interface already present [ 30.657616][ T674] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088 ... [ 30.657723][ T674] pc : __dev_printk+0x28/0xa0 [ 30.657732][ T674] lr : _dev_err+0x7c/0xa0 ... [ 30.657772][ T674] Call trace: [ 30.657775][ T674] __dev_printk+0x28/0xa0 [ 30.657778][ T674] _dev_err+0x7c/0xa0 [ 30.657781][ T674] ssif_probe+0x548/0x900 [ipmi_ssif 62ce4b08badc1458fd896206d9ef69a3c31f3d3e] [ 30.657791][ T674] i2c_device_probe+0x37c/0x3c0 ...
Initialize ssif_info->client before any error path can be taken. Clear i2c_client data in the error path to prevent the dangling pointer from leaking.
{
"affected": [],
"aliases": [
"CVE-2021-47095"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-04T18:15:07Z",
"severity": null
},
"details": "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.",
"id": "GHSA-pqmh-qr2r-5wwj",
"modified": "2024-03-04T18:30:38Z",
"published": "2024-03-04T18:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47095"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af"
}
],
"schema_version": "1.4.0",
"severity": []
}
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- 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.