| Summary: |
Kernel x86_64: Zero extend all registers after ptrace in 32bit entry path (CVE-2007-4573) |
| Product: |
Gentoo Security
|
Reporter: |
Christian Heim (RETIRED) <phreak> |
| Component: |
Kernel | Assignee: |
Gentoo Security <security> |
| Status: |
RESOLVED
FIXED
|
|
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| Severity: |
normal
|
CC: |
bernd, carlo, chainsaw, jaervosz, kernel
|
| Priority: |
High
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| Version: |
unspecified | |
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| Hardware: |
All | |
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| OS: |
Linux | |
|
| URL: |
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.7
|
| Whiteboard: |
[linux < 2.4.35.3][linux > 2.6 < 2.6.22.7][genpatches < 2.6.20-17][genpatches >= 2.6.21 < 2.6.22-8] |
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Package list:
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Runtime testing required:
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x86_64: Zero extend all registers after ptrace in 32bit entry path. Strictly it's only needed for eax. It actually does a little more than strictly needed -- the other registers are already zero extended. Also remove the now unnecessary and non functional compat task check in ptrace. -- genpatches provides a fix w/ 2.6.22-8 (including 2.6.22.7).