Description: Out of bounds memory access bug in get_next_net_page() in fs/f2fs/node.c
References:
 https://www.openwall.com/lists/oss-security/2021/03/28/2
 https://bugzilla.redhat.com/show_bug.cgi?id=1944298
 https://lore.kernel.org/lkml/20210322114730.71103-1-yuchao0@huawei.com/
Notes:
 bwh> Appears to have been introduced before 4.9.
Bugs:
upstream: released (5.13-rc1) [b862676e371715456c9dade7990c8004996d0d9e]
5.10-upstream-stable: released (5.10.36) [9aa4602237d535b83c579eb752e8fc1c3e7e7055]
4.19-upstream-stable: released (4.19.191) [bfa08a47cea2a9fab077c7135b9cfdf04e69c67a]
4.9-upstream-stable: needed
sid: released (5.10.38-1)
5.10-bullseye-security: N/A "Fixed before branching point"
4.19-buster-security: released (4.19.194-1)
4.9-stretch-security: ignored "f2fs is not supportable"