Description: stack-based buffer overflow in chap_server_compute_md5() in iscsi target
References:
 https://www.openwall.com/lists/oss-security/2018/09/24/2
 https://bugzilla.redhat.com/show_bug.cgi?id=1626035
 https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.19/scsi-fixes&id=1816494330a83f2a064499d8ed2797045641f92c
Notes:
Bugs:
upstream: released (4.19-rc6) [1816494330a83f2a064499d8ed2797045641f92c]
4.9-upstream-stable: released (4.9.130) [5eeb39743ba17bd36db8d86d0047181ee0b9ff71]
3.16-upstream-stable: released (3.16.59) [scsi-target-iscsi-use-hex2bin-instead-of-a-re-implementation.patch]
sid: released (4.18.10-1) [bugfix/all/scsi-target-iscsi-Use-hex2bin-instead-of-a-re-implem.patch]
4.9-stretch-security: released (4.9.110-3+deb9u5) [bugfix/all/scsi-target-iscsi-Use-hex2bin-instead-of-a-re-implem.patch]
3.16-jessie-security: released (3.16.59-1)