QID 198396

The nfc llcp protocol implementation in the linux kernel contained a reference counting error.
The nfc llcp protocol implementation in the linux kernel did not properly deallocate memory in certain error situations.
The nfc llcp protocol implementation in the linux kernel did not properly handle error conditions in some situations, leading to an infinite loop.
The ebpf implementation in the linux kernel performed out of bounds speculation on pointer arithmetic.
The kvm vmx implementation in the linux kernel did not properly prevent user space from tampering with an array index value, leading to a potential out-of-bounds write.

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.

a local attacker could use this to cause a denial of service (system crash) (cve-2020-25670).
A local attacker could use this to cause a denial of service (memory exhaustion) (cve-2020-25671, cve-2020-25672).
A local attacker could use this to cause a denial of service. (
cve-2020-25673).
A local attacker could use this to expose sensitive information. (
cve-2021-29155).
A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (
cve-2021-3501).