This bug was fixed in the package linux-gcp - 5.8.0-1031.32
---------------
linux-gcp (5.8.0-1031.32) 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 <stefan.ba...@canonical.com> Thu, 06 May 2021 10:32:39
+0200
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https://bugs.launchpad.net/bugs/1921960
Title:
Groovy update: upstream stable patchset 2021-03-30
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