QID 353156

a flaw was found in the linux kernel, where a bpf program can obtain sensitive information from kernel memory via a speculative store bypass side-channel attack.
This issue occurs when the protection mechanism neglects the possibility of uninitialized memory locations on the bpf stack.
The highest threat from this vulnerability is to confidentiality. (
( CVE-2021-34556) a flaw in the linux kernel allows a privileged bpf program to obtain sensitive information from kernel memory via a speculative store bypass side-channel in the ebpf subsystem (cve-2021-35477) a vulnerability was found in the linux kernel.
Missing size validations on inbound sctp packets may allow the kernel to read uninitialized memory. (
( CVE-2021-3655) a lack of cpu resources in the linux kernel tracing module functionality was found in the way users use the trace ring buffer in specific way.
Only privileged local users (with cap_sys_admin capability) could use this flaw to starve the resources causing denial of service. (
( CVE-2021-3679) a flaw use-after-free in the linux kernel usb high speed mobile devices functionality was found in the way user detaches usb device.
A local user could use this flaw to crash the system or escalate their privileges on the system. (
( CVE-2021-37159) ** disputed ** in drivers/char/virtio_console.c in the linux kernel before 5.13.4, data corruption or loss can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size.
Note: the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the length validation was added solely for robustness in the face of anomalous host os behavior. (
( CVE-2021-38199)

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.