CVE-2021-28972
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-28972
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-28972.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 5.10.26-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 5.10.26-1 |
| debian | bullseye | fixed | 5.10.26-1 |
| debian | forky | fixed | 5.10.26-1 |
| debian | sid | fixed | 5.10.26-1 |
| debian | trixie | fixed | 5.10.26-1 |
References
Verify integrity in audit chain (admin only). AS-IS.