7.8highHigh
CVE-2021-28691
Netapp Solidfire Baseboard Management Controller
Guest triggered use-after-free in Linux xen-netback A malicious or buggy network PV frontend can force Linux netback to disable the interface and terminate the receive kernel thread associated with queue 0 in response to the frontend sending a malformed packet. Such kernel thread termination will lead to a use-after-free in Linux netback when the backend is destroyed, as the kernel thread associated with queue 0 will have already exited and thus the call to kthread_stop will be performed against a stale pointer.
What the metrics mean
- It is requires local access to the machine.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, an ordinary user account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.8 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness
- CWE-416
- Assigned by
- security@xen.org
Dates
- Published
- 2021-06-29
- Last modified
- 2026-08-26
- Sources
- NVD
Affected products
- Netapp Solidfire Baseboard Management Controllerall versions
- Linux Linux Kernel5.5.0 - 5.10.43
- Netapp Cloud Backupall versions
- Netapp H410c Firmwareall versions
- Netapp H410call versions
- Netapp H300s Firmwareall versions
- Netapp H300sall versions
- Netapp H500s Firmwareall versions
- Netapp H500sall versions
- Netapp H700s Firmwareall versions
- Netapp H700sall versions
- Netapp H300e Firmwareall versions
As listed in the NVD configuration data. Not a statement about your estate.