QID 353155

a flaw was found in the linux kernels implementation of wireless drivers using the atheros chipsets.
an attacker within wireless range could send crafted traffic leading to information disclosure. (
( CVE-2020-3702) a flaw was found in the kvms amd code for supporting svm nested virtualization.
The flaw occurs when processing the vmcb (virtual machine control block) provided by the l1 guest to spawn/handle a nested guest (l2).
Due to improper validation of the "int_ctl" field, this issue could allow a malicious l1 to enable avic support (advanced virtual interrupt controller) for the l2 guest.
As a result, the l2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. (
( CVE-2021-3653) a flaw was found in the kvms amd code for supporting svm nested virtualization.
Due to improper validation of the "virt_ext" field, this issue could allow a malicious l1 to disable both vmload/vmsave intercepts and vls (virtual vmload/vmsave) for the l2 guest.
( CVE-2021-3656) a null pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the linux kernel, where triggering the bug requires cap_sys_admin.
This flaw allows a local attacker to crash the system or leak kernel internal information.
The highest threat from this vulnerability is to system availability. (
( CVE-2021-3739) a race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (kdsetmde).
( CVE-2021-3753) a flaw was found in the linux kernel.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

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