MEDIUM 6.7 Microsoft
CVE-2021-28972
In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8 the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination aka CID-cc7a0bb058b8.
Microsoft Security Update 2021-Mar: In drivers/pci/hotplug/rpadlpar_sysfs.c in the Linux kernel through 5.11.8 the RPA PCI Hotplug driver has a user-tolerable buffer overflow when writing a new device name to the driver from userspace allowing userspace to write data to the kernel stack frame directly. This occurs because add_slot_store and remove_slot_store mishandle drc_name '\0' termination aka CID-cc7a0bb058b8.
Affected Products
- cbl2 kernel 5.10.78.1-1 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28972
- https://nvd.nist.gov/vuln/detail/CVE-2021-28972
This medium severity vulnerability with a CVSS score of 6.7 was published on 2021-03-09 via Microsoft. Affected: cbl2 kernel 5.10.78.1-1 on CBL Mariner 2.0.
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