Bug 151249 - CAN-2005-0736 epoll overflow
CAN-2005-0736 epoll overflow
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity low
: ---
: ---
Assigned To: Dave Jones
Brian Brock
: Security
Depends On:
  Show dependency treegraph
Reported: 2005-03-16 07:41 EST by Mark J. Cox
Modified: 2015-01-04 17:17 EST (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2005-04-19 14:52:26 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

  None (edit)
Description Mark J. Cox 2005-03-16 07:41:41 EST
Reported to vendor-sec from the kernel security list, originally from Georgi

"It is possible to partially overwrite low kernel memory due to integer overflow
in sys_epoll_wait and misuse of __put_user in ep_send_events"

Note that this area usually doesn't actually contain anything (the first 4kB are
left alone for dosemu etc to read the original 16-bit interrupt descriptors, and
the rest is just about the last thing we ever allocate, so it's usually unused)

Fixed upstream, see
Comment 2 Josh Bressers 2005-04-19 14:52:26 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


Note You need to log in before you can comment on or make changes to this bug.