Comment 2 for bug 1923750

This bug was fixed in the package linux-raspi - 5.8.0-1024.27

---------------
linux-raspi (5.8.0-1024.27) groovy; urgency=medium

  [ Ubuntu: 5.8.0-53.60 ]

  * CVE-2021-3491
    - io_uring: fix provide_buffers sign extension
    - io_uring: fix overflows checks in provide buffers
    - SAUCE: proc: Avoid mixing integer types in mem_rw()
    - SAUCE: io_uring: truncate lengths larger than MAX_RW_COUNT on provide
      buffers
  * CVE-2021-3490
    - bpf: Fix a verifier failure with xor
    - SAUCE: bpf: verifier: fix ALU32 bounds tracking with bitwise ops
  * CVE-2021-3489
    - SAUCE: bpf: ringbuf: deny reserve of buffers larger than ringbuf
    - SAUCE: bpf: prevent writable memory-mapping of read-only ringbuf pages

 -- Stefan Bader <email address hidden> Thu, 06 May 2021 11:41:41 +0200