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Bug 1479857

Summary:	cryptsetup: Fix for unaligned access to hidden truecrypt header caused regression on systems with pagesize > 4KiB
Product:	Red Hat Enterprise Linux 7	Reporter:	Ondrej Kozina <okozina>
Component:	cryptsetup	Assignee:	Ondrej Kozina <okozina>
Status:	CLOSED ERRATA	QA Contact:	Release Test Team <release-test-team-automation>
Severity:	high	Docs Contact:
Priority:	high
Version:	7.5	CC:	agk, bugproxy, hannsj_uhl, jbrassow, jkachuck, jstodola, mbroz, okozina, pkotvan, prajnoha, release-test-team-automation, rhandlin
Target Milestone:	rc	Keywords:	Patch, Regression, ZStream
Target Release:	7.5
Hardware:	ppc64le
OS:	Linux
Whiteboard:
Fixed In Version:	cryptsetup-1.7.4-4.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1435543
Clones:	1479858 1510841 (view as bug list)		Environment:
Last Closed:	2018-04-10 16:38:50 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1435543
Bug Blocks:	1399177, 1438583, 1479858, 1510841, 1522983

Description Ondrej Kozina 2017-08-09 15:01:45 UTC

+++ This bug was initially created as a clone of Bug #1435543 +++

- A bugfix for bug #1435543 exposed bug in internal blockwise routines of libcryptsetup (it's a regression in 7.4)

it fails if page size is >4k and we use image in file 
(aligned read fail because it expects file image aligned to the page size. Similar problem is for write, but write code is never called in cryptsetup (truecrypt header support is read-only))

The bug only affects luks headers stored in regular files. Block devices are not affected.

Note: it's related to all archs with page size > 4 KiB, not only ppc64le

Comment 2 Ondrej Kozina 2017-08-09 15:05:59 UTC

Fixed in upstream by: https://gitlab.com/cryptsetup/cryptsetup/commit/e853aa2e7ca6e046eeb1e4f1ff534075d2dac33f

Comment 5 Joseph Kachuck 2017-11-08 16:39:44 UTC

Hello,
This bug has been copied as 7.4 z-stream (EUS) bug #1510841

Thank You
Joe Kachuck

Comment 6 Peter Kotvan 2017-11-14 09:14:34 UTC

I was able to reproduce the bug on RHEL-7.3 GA with cryptsetup-1.7.2-1.el7 and verify it on RHEL-7.5-20171107.1 with cryptsetup-1.7.4-4.el7.

Comment 9 errata-xmlrpc 2018-04-10 16:38:50 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0915