mlock on stack will create guard page gap
Bug #646114 reported by
Kees Cook
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Dapper |
Invalid
|
Undecided
|
Unassigned | ||
Hardy |
Fix Released
|
Undecided
|
Unassigned | ||
Jaunty |
Fix Released
|
Undecided
|
Unassigned | ||
Karmic |
Fix Released
|
Undecided
|
Unassigned | ||
Lucid |
Fix Released
|
Undecided
|
Unassigned | ||
Maverick |
Fix Released
|
Undecided
|
Unassigned | ||
linux-mvl-dove (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Dapper |
Invalid
|
Undecided
|
Unassigned | ||
Hardy |
Invalid
|
Undecided
|
Unassigned | ||
Jaunty |
Invalid
|
Undecided
|
Unassigned | ||
Karmic |
Invalid
|
Undecided
|
Unassigned | ||
Lucid |
Fix Released
|
Undecided
|
Unassigned | ||
Maverick |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Calling mlock on a portion of the stack will cause the kernel to incorrectly show a gap in /proc/$pid/maps between the old stack and the mlock region. This can confuse applications.
CVE References
- 2009-4895
- 2010-0435
- 2010-2066
- 2010-2226
- 2010-2248
- 2010-2478
- 2010-2495
- 2010-2521
- 2010-2524
- 2010-2798
- 2010-2942
- 2010-2943
- 2010-2946
- 2010-2954
- 2010-2955
- 2010-2960
- 2010-2962
- 2010-2963
- 2010-3015
- 2010-3067
- 2010-3078
- 2010-3080
- 2010-3081
- 2010-3084
- 2010-3301
- 2010-3310
- 2010-3432
- 2010-3437
- 2010-3442
- 2010-3477
- 2010-3705
- 2010-3848
- 2010-3849
- 2010-3850
- 2010-3861
- 2010-3865
- 2010-3875
- 2010-3876
- 2010-3877
- 2010-3880
- 2010-3904
- 2010-4072
- 2010-4073
- 2010-4076
- 2010-4077
- 2010-4158
- 2010-4163
- 2010-4165
- 2010-4169
- 2010-4175
Changed in linux-mvl-dove (Ubuntu): | |
status: | New → Invalid |
Changed in linux-mvl-dove (Ubuntu Dapper): | |
status: | New → Invalid |
Changed in linux-mvl-dove (Ubuntu Hardy): | |
status: | New → Invalid |
Changed in linux-mvl-dove (Ubuntu Jaunty): | |
status: | New → Invalid |
Changed in linux-mvl-dove (Ubuntu Karmic): | |
status: | New → Invalid |
Changed in linux-mvl-dove (Ubuntu Maverick): | |
status: | New → Fix Released |
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Test-case:
http:// bazaar. launchpad. net/~ubuntu- bugcontrol/ qa-regression- testing/ master/ annotate/ head%3A/ scripts/ kernel/ guard-page/ split-stack. c