Bug 659289
| Summary: | kernel: additional stack guard patches [rhel-5.4.z] | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | RHEL Program Management <pm-rhel> |
| Component: | kernel | Assignee: | Jiri Pirko <jpirko> |
| Status: | CLOSED ERRATA | QA Contact: | Red Hat Kernel QE team <kernel-qe> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 5.6 | CC: | cww, dhoward, eteo, fnadge, jarod, jpirko, jweiner, kzhang, lwang, lwoodman, plyons, pm-eus, rkhan |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | kernel-2.6.18-164.32.1.el5 | Doc Type: | Bug Fix |
| Doc Text: |
1. Cause:
Upward-growing mappings can expand into other mappings
2. Consequence:
The consequences range from accidental corruption of the adjacent mapping to targetted overwriting of data in the adjacent mapping that otherwise would be impossible due to access protection
3. Fix:
Prevent expansion from upward-growing mappings into adjacent mappings
4. Result:
Expansion of an upward-growing mapping into an adjacent mapping will be caught and the responsible program be killed by sending it the SIGBUS signal
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-01-12 08:56:52 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: | 630563 | ||
| Bug Blocks: | |||
|
Description
RHEL Program Management
2010-12-02 12:38:57 UTC
in kernel-2.6.18-164.32.1.el5 linux-2.6-mm-add-guard-page-for-stacks-that-grow-upwards.patch Dear Jirko, please add info on the bug to the field Technical Notes using the following structure: 1. Cause: 2. Consequence: 3. Fix: 4. Result: Many thanks, Florian
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
1. Cause:
2. Consequence:
3. Fix:
4. Result:
Technical note updated. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
Diffed Contents:
@@ -1,7 +1,4 @@
1. Cause:
-
2. Consequence:
-
3. Fix:
-
4. Result:
Technical note updated. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
Diffed Contents:
@@ -1,4 +1,8 @@
1. Cause:
+Upward-growing mappings can expand into other mappings
2. Consequence:
+The consequences range from accidental corruption of the adjacent mapping to targetted overwriting of data in the adjacent mapping that otherwise would be impossible due to access protection
3. Fix:
-4. Result:+Prevent expansion from upward-growing mappings into adjacent mappings
+4. Result:
+Expansion of an upward-growing mapping into an adjacent mapping will be caught and the responsible program be killed by sending it the SIGBUS signal
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0015.html |