CVE-2021-28972
Medium
Description
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.
SeverityMedium
CVSS6.7
Exploit probability—
Product
Linux Kernel
PublishedMar 22, 2021
First seenMar 22, 2021
How to fix
Update
- linux linux_kernel4.4.263, 4.14.227, 5.4.108, 5.10.26, 5.11.9 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.4.263, 4.5 < v ≤ 4.9.263, 4.10 ≤ v < 4.14.227, 4.15 < v ≤ 4.19.183, 4.20 ≤ v < 5.4.108, 5.5.0 ≤ v < 5.10.26, 5.11 ≤ v < 5.11.9 | 4.4.263, 4.14.227, 5.4.108, 5.10.26, 5.11.9 |
| fedoraproject fedora | 32, 33, 34 | — |
| netapp cloud_backup | No range specified | — |
| netapp fas\/aff_baseboard_management_controller | No range specified | — |
| netapp solidfire_baseboard_management_controller_firmware | No range specified | — |
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