[ubuntu/focal-security] linux-oem-5.10 5.10.0-1026.27 (Accepted)

[Andy Whitcroft]

linux-oem-5.10 (5.10.0-1026.27) focal; urgency=medium

  * CVE-2021-3491
    - 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
    - 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

Date: 2021-05-06 07:04:09.812997+00:00
Changed-By: Stefan Bader <stefan.bader at canonical.com>
Signed-By: Andy Whitcroft <apw at canonical.com>
https://launchpad.net/ubuntu/+source/linux-oem-5.10/5.10.0-1026.27
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