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and subject line Bug#308757: fixed in kernel-source-2.4.27 2.4.27-10
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From: Moritz Muehlenhoff <[EMAIL PROTECTED]>
To: Debian Bug Tracking System <[EMAIL PROTECTED]>
Subject: CAN-2005-1263: Linux kernel ELF core dump privilege elevation
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Date: Thu, 12 May 2005 09:13:48 +0200
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Package: kernel-source-2.4.27
Version: unavailable; reported 2005-05-12
Severity: grave
Tags: security patch
Paul Starzetz has found another flaw in the Linux kernel that can be exploited
to gain extended local privileges. Please see his detailed advisory at
http://isec.pl/vulnerabilities/isec-0023-coredump.txt
Greg Kroah-Hartman has posted a patch for 2.6, which should apply to 2.4 as
well. It's attached.
Cheers,
Moritz
-- System Information:
Debian Release: 3.0
Architecture: i386
Kernel: Linux anton 2.4.29-univention.1 #1 SMP Thu Jan 27 17:08:46 CET 2005 i686
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filename="/home/jmm/CAN-2005-1263-kernel-local-privilege-escalation.patch"
Subject: possibly fix Linux kernel ELF core dump privilege elevation
As noted by Paul Starzetz
references CAN-something-I-need-to-go-look-up...
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
fs/binfmt_elf.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
--- gregkh-2.6.orig/fs/binfmt_elf.c 2005-05-11 00:03:45.000000000 -0700
+++ gregkh-2.6/fs/binfmt_elf.c 2005-05-11 00:09:17.000000000 -0700
@@ -251,1 +251,1 @@
}
/* Populate argv and envp */
- p = current->mm->arg_start;
+ p = current->mm->arg_end = current->mm->arg_start;
while (argc-- > 0) {
size_t len;
__put_user((elf_addr_t)p, argv++);
@@ -1301,4 +1301,4 @@
static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,
struct mm_struct *mm)
{
- int i, len;
+ unsigned int i, len;
/* first copy the parameters from user space */
memset(psinfo, 0, sizeof(struct elf_prpsinfo));
--===============0278309518==--
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From: Simon Horman <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
X-Katie: $Revision: 1.55 $
Subject: Bug#308757: fixed in kernel-source-2.4.27 2.4.27-10
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Source: kernel-source-2.4.27
Source-Version: 2.4.27-10
We believe that the bug you reported is fixed in the latest version of
kernel-source-2.4.27, which is due to be installed in the Debian FTP archive:
kernel-doc-2.4.27_2.4.27-10_all.deb
to pool/main/k/kernel-source-2.4.27/kernel-doc-2.4.27_2.4.27-10_all.deb
kernel-patch-debian-2.4.27_2.4.27-10_all.deb
to
pool/main/k/kernel-source-2.4.27/kernel-patch-debian-2.4.27_2.4.27-10_all.deb
kernel-source-2.4.27_2.4.27-10.diff.gz
to pool/main/k/kernel-source-2.4.27/kernel-source-2.4.27_2.4.27-10.diff.gz
kernel-source-2.4.27_2.4.27-10.dsc
to pool/main/k/kernel-source-2.4.27/kernel-source-2.4.27_2.4.27-10.dsc
kernel-source-2.4.27_2.4.27-10_all.deb
to pool/main/k/kernel-source-2.4.27/kernel-source-2.4.27_2.4.27-10_all.deb
kernel-tree-2.4.27_2.4.27-10_all.deb
to pool/main/k/kernel-source-2.4.27/kernel-tree-2.4.27_2.4.27-10_all.deb
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [EMAIL PROTECTED],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Simon Horman <[EMAIL PROTECTED]> (supplier of updated kernel-source-2.4.27
package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [EMAIL PROTECTED])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.7
Date: Mon, 16 May 2005 14:48:47 +0900
Source: kernel-source-2.4.27
Binary: kernel-tree-2.4.27 kernel-source-2.4.27 kernel-patch-debian-2.4.27
kernel-doc-2.4.27
Architecture: source all
Version: 2.4.27-10
Distribution: unstable
Urgency: low
Maintainer: Debian Kernel Team <debian-kernel@lists.debian.org>
Changed-By: Simon Horman <[EMAIL PROTECTED]>
Description:
kernel-doc-2.4.27 - Linux kernel specific documentation for version 2.4.27
kernel-patch-debian-2.4.27 - Debian patches to Linux 2.4.27
kernel-source-2.4.27 - Linux kernel source for version 2.4.27 with Debian
patches
kernel-tree-2.4.27 - Linux kernel source tree for building Debian kernel images
Closes: 302704 302705 302864 305655 308757
Changes:
kernel-source-2.4.27 (2.4.27-10) unstable; urgency=low
.
* 155_net-bluetooth-signdness-fix.diff:
[Security] Fix signedness problem at socket creation in bluetooth
which can lead to local root exploit. See CAN-2005-0750
(Simon Horman) (closes: Bug#302704)
.
* 156_fs-ext2-info-leak.diff:
[Security] Fix information leak in ext2 which leads to
a local information leak. See CAN-2005-0400
(Simon Horman)
.
* 157_fs-isofs-range-check-1.diff, 157_fs-isofs-range-check-2.diff,
157_fs-isofs-range-check-3.diff:
[Security] Fix range checking in isofs which leads to a local crash
and arbitary code execution. See CAN-2005-0815
(Simon Horman) (closes: #302864)
.
* 158_fs-binfmt_elf-dos.diff:
Potential DOS in load_elf_library. See CAN-2005-0749
(Simon Horman) (closes: #302705)
.
* 159_fs-cramfs-stat.diff
Fix to stat output for cramfs
(Simon Horman)
.
* 160_drivers-net-sis900-oops.diff
sis900 kernel oops fix
(Simon Horman)
.
* 161_drivers-net-amd8111e-irq.diff
AMD8111e driver was releasing an irq in some error situations
(Simon Horman)
.
* 162_drivers-net-via-rhine-irq.diff
VIA Rhine driver was releasing an irq in some error situations
(Simon Horman)
.
* 165_VM_IO.diff added, 140_VM_IO.diff removed:
[CAN-2004-1057] Updated fix for DoS from accessing freed kernel pages.
The previous fix seems to have cuased some problems and this
is the one that is upstream.
(Simon Horman, Dann Frazier)
.
* 164_net-ipv4-icmp-quench.diff:
[CAN-2004-0790] Just silently ignore ICMP Source Quench messages.
(Simon Horman) (closes: #305655)
.
* 165_arch-ia64-kernel-missing-sysctl.diff:
[CAN-2005-0137] Add missing sysctl slot for ia64 resolving
local DoS. (Simon Horman)
.
* fs-binfmt_elf-dump-privelage.diff:
Linux kernel ELF core dump privilege elevation
See CAN-2005-1263. (closes: #308757). (Simon Horman)
Files:
59d9aeb90e71e4b6369a6b4986da690b 888 devel optional
kernel-source-2.4.27_2.4.27-10.dsc
0ccc5c9df0130e5da099cd1a7c8a7f64 688010 devel optional
kernel-source-2.4.27_2.4.27-10.diff.gz
157b883cbfb91812912c16728eb61fa0 633228 devel optional
kernel-patch-debian-2.4.27_2.4.27-10_all.deb
9478d7f77b06c30454ef7864d9487fd4 3576196 doc optional
kernel-doc-2.4.27_2.4.27-10_all.deb
3ae3d29a6b8a3de23a860627f3b440c3 31022934 devel optional
kernel-source-2.4.27_2.4.27-10_all.deb
15394d1f0d96b07955178f05296929e0 23348 devel optional
kernel-tree-2.4.27_2.4.27-10_all.deb
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