CVE - CVE-2021-47095

CVE-ID
CVE-2021-47095	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c URL:https://git.kernel.org/stable/c/1f6ab847461ce7dd89ae9db2dd4658c993355d7c MISC:https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15 URL:https://git.kernel.org/stable/c/34f35f8f14bc406efc06ee4ff73202c6fd245d15 MISC:https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29 URL:https://git.kernel.org/stable/c/77a7311ca167aa5b7055c549a940a56e73ee5f29 MISC:https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af URL:https://git.kernel.org/stable/c/8efd6a3391f7b0b19fb0c38e50add06ca30c94af
Assigning CNA
kernel.org
Date Record Created
20240229	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240229)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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