Description: integer overflow in ext4_es_cache_extent
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=1936786
 https://www.openwall.com/lists/oss-security/2021/03/17/1
 https://bugzilla.suse.com/show_bug.cgi?id=1173485
Notes:
Bugs:
upstream: released (5.9-rc2) [d176b1f62f242ab259ff665a26fbac69db1aecba, bf9a379d0980e7413d94cb18dac73db2bfc5f470, ce9f24cccdc019229b70a5c15e2b09ad9c0ab5d1]
5.10-upstream-stable: N/A "Fixed before branching point"
4.19-upstream-stable: released (4.19.143) [c279f7a44fd3d1554561efb71340302a6b005ce9], (4.19.142) [1373f884a081d336aafd9ed742229fb2cd7a3613], released (4.19.182) [a75a5d163857cd507255b04f8d11613978434636]
4.9-upstream-stable: released (4.9.263) [d01b5fc061683e8fc28499b283fab39838730c9b, f175d63724fa0738c060a1e07f796f353e4e729f, 58ef3832e6864e862e484123bf8501258e968ce0]
sid: released (5.8.7-1)
4.19-buster-security: released (4.19.181-1) [bugfix/all/ext4-check-journal-inode-extents-more-carefully.patch]
4.9-stretch-security: released (4.9.272-1)