Full Disclosure mailing list archives

Re: [SECURITY] [DSA-403-1] userland can access Linux kernel memory

From: Florian Weimer <fw () deneb enyo de>
Date: Tue, 2 Dec 2003 17:43:09 +0100

Wojciech Purczynski wrote:

This is not an integer overflow bug. do_brk() doesn't verify its arguments
at all, allowing to create arbitrarily large virtual memory mapping (vma)
consuming kernel memory.


At least this explains why it wasn't found by the Stanford checker tool.
Thanks.

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Current thread:

[SECURITY] [DSA-403-1] userland can access Linux kernel memory debian-security-announce (Dec 01)
- Re: [SECURITY] [DSA-403-1] userland can access Linux kernel memory Florian Weimer (Dec 01)
  - Re: [SECURITY] [DSA-403-1] userland can access Linux kernel memory Roman Drahtmueller (Dec 02)
    - Re: [SECURITY] [DSA-403-1] userland can access Linux kernel memory Florian Weimer (Dec 02)
    - Re: [SECURITY] [DSA-403-1] userland can access Linux kernel memory Paul Starzetz (Dec 02)
  - Re: [SECURITY] [DSA-403-1] userland can access Linux kernel memory Cedric Blancher (Dec 02)
  - Re: [SECURITY] [DSA-403-1] userland can access Linux kernel memory Wojciech Purczynski (Dec 02)
    - Re: [SECURITY] [DSA-403-1] userland can access Linux kernel memory Florian Weimer (Dec 02)