Bug 455378 (CVE-2008-3247) - CVE-2008-3247 kernel: x86: fix ldt limit for 64 bit
Summary: CVE-2008-3247 kernel: x86: fix ldt limit for 64 bit
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2008-3247
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-07-15 08:47 UTC by Eugene Teo (Security Response)
Modified: 2021-11-12 19:51 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-07-29 06:16:44 UTC
Embargoed:

Attachments (Terms of Use)
Upstream patch for this issue (1.12 KB, patch)
2008-07-15 08:56 UTC, Eugene Teo (Security Response) 		no flags Details | Diff
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Comment 1 Eugene Teo (Security Response) 2008-07-15 08:49:21 UTC 
Description of problem:
There is a bug in set_tssldt_descriptor routine that when it is called, it will
use a size larger than (entries * LDT_ENTRY_SIZE - 1), resulting in an unintended
miscalculation of the ldt limits.

Version-Release number of selected component (if applicable):
It only affects 2.6.25-based kernel releases.

Additional info:
RHEL kernels are not affected by this. Filing this for Fedora kernels.
Comment 3 Eugene Teo (Security Response) 2008-07-15 08:56:02 UTC 
Proposed upstream patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5ac37f87ff18843aabab84cf75b2f8504c2d81fe
Comment 4 Eugene Teo (Security Response) 2008-07-15 08:56:54 UTC 
Created attachment 311797 [details]
Upstream patch for this issue
Comment 5 Dave Jones 2008-07-15 16:39:29 UTC 
cvs already merged up to 2.6.25.11, update should be going out soon.
Comment 6 Chuck Ebbert 2008-07-29 04:04:28 UTC 
F8 and F9 updates are released.
Comment 7 Red Hat Product Security 2008-07-29 06:16:44 UTC 
This issue was addressed in:

Fedora:
  https://admin.fedoraproject.org/updates/F8/FEDORA-2008-6613
  https://admin.fedoraproject.org/updates/F9/FEDORA-2008-6634
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